doc(README.md): Add quick Start & Continue Learning sections

addressing issues [#2272] and [#2274]

README.md

@@ -1,7 +1,72 @@
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 # [Rustlings](https://rustlings.rust-lang.org) 🦀
 
+  
+
+    
+
 Small exercises to get you used to reading and writing [Rust](https://www.rust-lang.org) code - _Recommended in parallel to reading [the official Rust book](https://doc.rust-lang.org/book) 📚️_
 
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+
 Visit the **website** for a demo, info about setup and more:
 
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 ## ➡️ [rustlings.rust-lang.org](https://rustlings.rust-lang.org) ⬅️
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+  
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+## Quick start
+
+### Installation
+
+Installing Rustlings
+
+The following command will download and compile Rustlings:
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+  
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+``` cargo install rustlings ```
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+  
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+### Initialization
+
+After installing Rustlings, run the following command to initialize the rustlings/ directory:
+
+``` bash
+rustlings init 
+```
+
+  
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+Now, go into the newly initialized directory and launch Rustlings for further instructions on getting started with the exercises:
+
+``` 
+cd rustlings
+ ```
+
+  
+
+### Starting Rustlings
+
+    rustlings
+
+  
+
+## Get Back To Practice
+
+Navigate to Rsustlings Directory:
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+``` 
+cd rustlings 
+```
+
+then run:
+
+```
+ rustlings
+  ```
+
+Happy Learning!