Update README

README.md

@@ -8,4 +8,39 @@
 [license-shield]: https://img.shields.io/badge/license-MIT-blue.svg?style=flat
 [license-link]: https://github.com/metalnem/bandcamp-downloader/blob/master/LICENSE
 
-Command line tool to download albums from your Bandcamp collection.
+Command line tool to download albums from your Bandcamp collection in MP3
+V0 format. Its primary purpose is to allow you to download the albums you
+purchased, but that are no longer available on Bandcamp website. Requires
+[.NET 8.0](https://dotnet.microsoft.com/en-us/download/dotnet/8.0) to run.
+
+## Usage
+
+```shell
+$ dotnet run
+Description:
+  List all albums in your Bandcamp collection.
+
+Usage:
+  bandcamp-downloader [command] [options]
+
+Options:
+  --username <username> (REQUIRED)  Your Bandcamp account username.
+  --password <password> (REQUIRED)  Your Bandcamp account password.
+
+Commands:
+  download  Download the album with the specified ID.
+```
+
+## Examples
+
+```shell
+# List all albums in your Bandcamp collection
+$ dotnet run --username $USERNAME --password $PASSWORD
+3049477697 The Messthetics — The Messthetics and James Brandon Lewis
+ 561248726 Necrophobic — In The Twilight Grey (24-bit HD audio)
+ 639550734 MIDNIGHT — Hellish Expectations
+1362411941 MIDNIGHT — Complete and Total Hell
+
+# Download the album with the specified ID
+$ dotnet run --username $USERNAME --password $PASSWORD --album 3049477697
+```