diff --git a/atomic/go.mod b/atomic/go.mod
deleted file mode 100644
index d283dce..0000000
--- a/atomic/go.mod
+++ /dev/null
@@ -1,3 +0,0 @@
-module github.com/tomsucho/go-examples/atomic
-
-go 1.20
diff --git a/atomic/main.go b/atomic/main.go
deleted file mode 100644
index fc6513b..0000000
--- a/atomic/main.go
+++ /dev/null
@@ -1,25 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"sync"
-	"sync/atomic"
-)
-
-func main() {
-
-	var counter int32 = 0
-	var wg sync.WaitGroup
-
-	for i := 0; i < 5000; i++ {
-		for j := 0; j < 10; j++ {
-			wg.Add(1)
-			go func() {
-				defer wg.Done()
-				atomic.AddInt32(&counter, 1)
-			}()
-		}
-	}
-	wg.Wait()
-	fmt.Println("Counter:=", counter)
-}
diff --git a/channel-sync/main.go b/channel-sync/main.go
deleted file mode 100644
index 390b700..0000000
--- a/channel-sync/main.go
+++ /dev/null
@@ -1,29 +0,0 @@
-package main
-
-import "fmt"
-
-func main() {
-
-	jobs := make(chan int)
-	done := make(chan bool)
-
-	go func() {
-		for {
-			if j, more := <-jobs; more {
-				fmt.Println("Job handler: received", j)
-			} else {
-				fmt.Println("Job handler: channel closed..")
-				done <- true
-				return
-			}
-		}
-	}()
-
-	for i := 0; i < 10; i++ {
-		fmt.Println("Sending job", i)
-		jobs <- i
-	}
-	close(jobs)
-	<-done
-
-}
diff --git a/channels/main.go b/channels/main.go
deleted file mode 100644
index d650d28..0000000
--- a/channels/main.go
+++ /dev/null
@@ -1,41 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"sync"
-)
-
-var wg sync.WaitGroup
-
-func main() {
-	m := make(chan string, 11)
-
-	for i := 0; i < 10; i++ {
-		wg.Add(1)
-		go func(i int) {
-			defer wg.Done()
-			m <- fmt.Sprintf("Id: %d", i)
-			fmt.Println("Sent:", i)
-		}(i)
-		if i == 9 {
-			//time.Sleep(1 * time.Second)
-			close(m)
-		}
-
-	}
-	// wg.Add(1)
-	// go func(t time.Duration) {
-	// 	defer wg.Done()
-	// 	time.Sleep(t * time.Minute)
-	// }(1)
-
-	//wg.Wait()
-	for {
-		if val, ok := <-m; ok {
-			fmt.Println("Received:", val)
-		} else {
-			break
-		}
-	}
-	fmt.Println("Finished!")
-}
diff --git a/errors/main.go b/errors/main.go
deleted file mode 100644
index 56d3a8a..0000000
--- a/errors/main.go
+++ /dev/null
@@ -1,34 +0,0 @@
-package main
-
-import (
-	"fmt"
-)
-
-type myError struct {
-	id  int
-	msg string
-}
-
-func (my_err myError) Error() string {
-	return fmt.Sprintf("ERROR: id=%d, msg=%s", my_err.id, my_err.msg)
-}
-
-func divider(a, b int) (int, error) {
-	if b == 0 {
-		return 0, myError{id: 1, msg: "Can't divide by 0!"}
-	} else {
-		return a / b, nil
-	}
-
-}
-
-func main() {
-
-	fmt.Println("Hello World!")
-	if v, err := divider(4, 0); err == nil {
-		fmt.Printf("Result = %d", v)
-	} else {
-		fmt.Println(err)
-	}
-
-}
diff --git a/files/check.go b/files/check.go
deleted file mode 100644
index d9f9f75..0000000
--- a/files/check.go
+++ /dev/null
@@ -1,7 +0,0 @@
-package main
-
-func check(e error) {
-	if e != nil {
-		panic(e)
-	}
-}
diff --git a/files/read.go b/files/read.go
deleted file mode 100644
index 5b12a02..0000000
--- a/files/read.go
+++ /dev/null
@@ -1,24 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"os"
-)
-
-func main() {
-	p := fmt.Println
-	pf := fmt.Printf
-
-	str := `This is a smaple text!
-	La la la!`
-	err := os.WriteFile("file.txt", []byte(str), 0644)
-
-	check(err)
-
-	if data, err := os.ReadFile("file.txt"); err == nil {
-		pf("%s\n", string(data))
-	} else {
-		p(err)
-	}
-
-}
diff --git a/interfaces/main.go b/interfaces/main.go
deleted file mode 100644
index f8760f1..0000000
--- a/interfaces/main.go
+++ /dev/null
@@ -1,48 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"math"
-)
-
-type geometry interface {
-	area() float64
-	perimeter() float64
-}
-
-type rectangle struct {
-	width  float64
-	height float64
-}
-
-type circle struct {
-	radius float64
-}
-
-func (c circle) area() float64 {
-	return 3.14 * math.Pow(c.radius, 2)
-}
-
-func (r rectangle) area() float64 {
-	return r.height * r.width
-}
-
-func (r rectangle) perimeter() float64 {
-	return r.height*2 + r.width*2
-}
-
-func (c circle) perimeter() float64 {
-	return 2 * 3.14 * c.radius
-}
-
-func main() {
-	rect := rectangle{height: 5, width: 10}
-	fmt.Println(rect.area())
-
-	geo := geometry(rect)
-	fmt.Println(geo.area())
-
-	circ := circle{radius: 10}
-	geo = geometry(circ)
-
-}
diff --git a/json/main.go b/json/main.go
deleted file mode 100644
index 9cb3b66..0000000
--- a/json/main.go
+++ /dev/null
@@ -1,37 +0,0 @@
-package main
-
-import (
-	"encoding/json"
-	"fmt"
-	"os"
-)
-
-type data struct {
-	S string `json:"blah"`
-	V int    `json:"num"`
-}
-
-func main() {
-
-	if strB, err := json.Marshal([]int{1, 2, 3}); err == nil {
-		fmt.Println(strB)
-	} else {
-		fmt.Println(err)
-	}
-
-	if str, err := json.Marshal(data{S: "test", V: 1}); err == nil {
-		enc := json.NewEncoder(os.Stdout)
-		enc.Encode(data{S: "test", V: 1})
-		fmt.Println(string(str))
-	} else {
-		fmt.Println(err)
-	}
-
-	d := []byte(`{"name": "John", "numbers": [{"age": 42}, {"height": 182}]}`)
-	var d_str map[string]interface{}
-	if err := json.Unmarshal(d, &d_str); err == nil {
-		fmt.Println(d_str)
-	} else {
-		fmt.Println(err)
-	}
-}
diff --git a/mutex/main.go b/mutex/main.go
deleted file mode 100644
index aac08da..0000000
--- a/mutex/main.go
+++ /dev/null
@@ -1,43 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"math/rand"
-	"sync"
-	"time"
-)
-
-type Container struct {
-	mtx   sync.Mutex
-	items map[string]int
-}
-
-func (c *Container) inc(key string, i int, delay time.Duration) {
-	c.mtx.Lock()
-	time.Sleep(delay)
-	c.items[key] += 1
-	defer c.mtx.Unlock()
-	fmt.Printf("%d: incremented: %d\n", i, c.items[key])
-}
-
-var wg sync.WaitGroup
-
-func main() {
-	c := Container{
-		items: map[string]int{"a": 0, "b": 0},
-	}
-
-	rand.Seed(time.Now().UnixNano())
-
-	for i := 0; i < 100; i++ {
-		wg.Add(1)
-		go func(i int, t time.Duration) {
-			defer wg.Done()
-			c.inc("a", i, t)
-			//c.inc("b", i)
-		}(i, time.Duration(rand.Intn(3)))
-
-	}
-	wg.Wait()
-	fmt.Println(c.items)
-}
diff --git a/parsing_url/main.go b/parsing_url/main.go
deleted file mode 100644
index c8f3594..0000000
--- a/parsing_url/main.go
+++ /dev/null
@@ -1,19 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"net/url"
-)
-
-func main() {
-	p := fmt.Println
-	s := "postgres://user:pass@host.com:5432/path?k=v#f"
-
-	u, _ := url.Parse(s)
-	p(u.Scheme)
-	p(u.User)
-	p(u.Query())
-	p(u.Path)
-	p(u.Fragment)
-	p(u.RawQuery)
-}
diff --git a/select/main.go b/select/main.go
deleted file mode 100644
index 1072014..0000000
--- a/select/main.go
+++ /dev/null
@@ -1,30 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"time"
-)
-
-func simulate_work(s string, c chan string, t time.Duration) {
-	time.Sleep(t)
-	c <- fmt.Sprintf("%s finished!", s)
-}
-
-func main() {
-	c1 := make(chan string)
-	c2 := make(chan string)
-
-	go simulate_work("c1", c1, 3*time.Second)
-	go simulate_work("c2", c2, time.Second)
-
-	//for i := 0; i < 2; i++ {
-	select {
-	case s := <-c1:
-		fmt.Println(s)
-	case s := <-c2:
-		fmt.Println(s)
-	case <-time.After(1 * time.Second):
-		fmt.Println("Timeout!")
-	}
-	//}
-}
diff --git a/sorting/main.go b/sorting/main.go
deleted file mode 100644
index 5ee7193..0000000
--- a/sorting/main.go
+++ /dev/null
@@ -1,47 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"sort"
-)
-
-type byLen []string
-
-func (b byLen) Len() int {
-	return len(b)
-}
-
-func (b byLen) Swap(i, j int) {
-	b[i], b[j] = b[j], b[i]
-}
-
-func (b byLen) Less(i, j int) bool {
-	return len(b[i]) < len(b[j])
-}
-
-func main() {
-
-	test := []string{"apple", "joe", "bananas"}
-	sort.Sort(byLen(test))
-	fmt.Println(test)
-
-	s := "abcdefg🔥"
-	txt := []rune(s)
-	reversed := ""
-
-	// for idx, c := range s {
-	// 	txt[idx] = c
-	// }
-
-	for i := len(txt) - 1; i >= 0; i-- {
-		// fmt.Printf("Rune %d: %s\n", i, string(txt[i]))
-		reversed = reversed + string(txt[i])
-	}
-	fmt.Println(s)
-	fmt.Println(reversed)
-
-	// Sorting
-	nums := []int{9, 5, 7, 1, 4}
-	sort.Ints(nums)
-	fmt.Println(nums)
-}
diff --git a/testing/intutils.go b/testing/intutils.go
deleted file mode 100644
index 8879d30..0000000
--- a/testing/intutils.go
+++ /dev/null
@@ -1,8 +0,0 @@
-package intutils
-
-func IntMin(a, b int) int {
-	if a < b {
-		return a
-	}
-	return b
-}
diff --git a/testing/intutils_test.go b/testing/intutils_test.go
deleted file mode 100644
index 736b356..0000000
--- a/testing/intutils_test.go
+++ /dev/null
@@ -1,11 +0,0 @@
-package intutils
-
-import "testing"
-
-func TestIntMin(t *testing.T) {
-	a, b, wants := 2, -2, -2
-	res := IntMin(a, b)
-	if res != wants {
-		t.Errorf("IntMin(%d,%d) wants %d", a, b, wants)
-	}
-}
diff --git a/ticker/main.go b/ticker/main.go
deleted file mode 100644
index e3ce1aa..0000000
--- a/ticker/main.go
+++ /dev/null
@@ -1,26 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"time"
-)
-
-func main() {
-
-	ticker := time.NewTicker(time.Second)
-	done := make(chan bool)
-
-	go func() {
-		for {
-			select {
-			case <-done:
-				fmt.Println("Closing!")
-				return
-			case t := <-ticker.C:
-				fmt.Println("Ticket at:", t)
-			}
-		}
-	}()
-	time.Sleep(10 * time.Second)
-	done <- true
-}
diff --git a/time/main.go b/time/main.go
deleted file mode 100644
index a749aa7..0000000
--- a/time/main.go
+++ /dev/null
@@ -1,20 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"time"
-)
-
-func main() {
-
-	p := fmt.Println
-
-	t := time.Now()
-	p(t.Add(time.Hour * 24))
-	then := t.AddDate(0, 1, 0)
-	p(then)
-	p(then.Sub(t))
-
-	future := time.Date(2023, 7, 28, 14, 30, 20, 1000, time.Local)
-	p(future)
-}
diff --git a/workers/main.go b/workers/main.go
deleted file mode 100644
index 83f89c2..0000000
--- a/workers/main.go
+++ /dev/null
@@ -1,34 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"time"
-)
-
-func worker(id int, jobs chan int, results chan string) {
-	for job := range jobs {
-		fmt.Printf("Worker id:=%d starting job:=%d\n", id, job)
-		time.Sleep(time.Second)
-		results <- fmt.Sprintf("Worker id:=%d finished job:=%d\n", id, job)
-	}
-}
-
-func main() {
-
-	numJobs := 10
-	jobs := make(chan int, numJobs)
-	results := make(chan string, numJobs)
-
-	for w := 0; w < 2; w++ {
-		go worker(w, jobs, results)
-	}
-
-	for j := 0; j < numJobs; j++ {
-		jobs <- j
-	}
-	close(jobs)
-
-	for k := 0; k < numJobs; k++ {
-		fmt.Println(<-results)
-	}
-}