final tweaks to request a PR

README.md

@@ -121,23 +121,18 @@ A lot of information has been written about JavaScript and EcmaScript since both
   - Exercises
 - DAY 7
   - `this` Keyword
-    - <https://github.com/getify/You-Dont-Know-JS/blob/master/this%20%26%20object%20prototypes/ch1.md>
-    - <https://github.com/getify/You-Dont-Know-JS/blob/master/this%20%26%20object%20prototypes/ch2.md>
-    - <https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/this>
-    - BIND
-    - APPLY
-    - CALL
+    - Introduction
+    - Resolving `this`
+    - Explicitly binding `this` through prototype methods
+      - `Function.prototype.bind()`
+      - `Function.prototype.apply()`
+      - `Function.prototype.call()`
   - Strict mode
     - What happens on strict mode?
     - Semantic Differences
   - Arrow Functions
-    - ...
-    - ...
-    - .. good practices
   - Generators
-    - ..
-    - ..
-    - .. good practices
+  - Exercises
 - DAY 8
   - Classes
     - <https://www.ecma-international.org/ecma-262/6.0/#sec-class-definitions>

day_07.md

@@ -150,7 +150,7 @@ f(); // 6
 
 ```
 
-One of the most expected and misused features of ES6 is the Arrow Function. Undoubtedly powerful it might also derive in a headache inf you don't really know how they work and which are the difference between the full body notation and the arrow notation.
+One of the most expected and misused features of ES6 is the Arrow Function. Undoubtedly powerful it might also derive in a headache if you don't really know how they work and which are the difference between the full body notation and the arrow notation.
 
 Let's take a look at [YDKJS - ES6 & Beyond - chapter 2](https://github.com/getify/You-Dont-Know-JS/blob/1st-ed/es6%20%26%20beyond/ch2.md#arrow-functions)
 
@@ -196,6 +196,7 @@ Since this is a particularly complex topic, with several nuances, let's try to u
 /**
  *
  * @param {number} initialValue
+ * @returns {Object} Generator
  */
 function* bottlesOfBeer (initialValue) {
   let bob = initialValue;
@@ -245,6 +246,7 @@ bob.next();
 ```javascript
 /**
  *
+ * @returns {Object} Generator
  */
 function* passingValToNext () {
   let val = 10;
@@ -257,6 +259,22 @@ function* passingValToNext () {
     console.log(`DOWN val=${val}`);
   }
 }
+
+let pvtn = passingValToNext();
+// statement completion value -> passingValToNext {<suspended>}
+
+pvtn.next(2);
+// log ->  UP val=10
+// statement completion value -> {value: 20, done: false}
+
+pvtn.next(7);
+// log ->  DOWN val=7
+// log ->  UP val=7
+// statement completion value -> {value: 17, done: false}
+
+// WAIT! WHAT??!!!!
+// how does it work?
+
 ```
 
 ### Sample combining initial value and passing value to next
@@ -265,7 +283,7 @@ function* passingValToNext () {
 /**
  *
  * @param {Number} expectedTotal
- * @returns {Object} Iterator
+ * @returns {Object} Generator
  */
 function* calculateDownloadProgress (expectedTotal) {
   let totalDownloaded = 0;
@@ -279,13 +297,23 @@ function* calculateDownloadProgress (expectedTotal) {
     newItems = yield `${percent}%`;
   }
 }
+
+let progress = calculateDownloadProgress(1024);
+// statement completion value -> undefined
+progress.next()
+// statement completion value -> {value: "0.00%", done: false}
+progress.next(15)
+// statement completion value -> {value: "1.46%", done: false}
+progress.next(500)
+// statement completion value -> {value: "50.29%", done: false}
 ```
 
 ### DIY
 
 ```javascript
 /**
  *
+ * @returns {Object} Generator
  */
 function* spinGen() {
   while(true){

package.json

@@ -1,6 +1,6 @@
 {
   "name": "a-walk-in-javascript",
-  "version": "1.2.0",
+  "version": "1.3.0",
   "description": "A day by day walk through the basics of javascript assisted with notes, exercises and references to the most significant resources online",
   "main": "''",
   "scripts": {