Update README.md

Author: hamdivazim-archive

README.md

@@ -7,6 +7,15 @@ Install with pip in your terminal, making sure Python is added to PATH:
 $ pip install usefulib
 ```
 
+## How to use
+All you need to do is import the package, and all usefulibs that you may want will come along with it! As an example:
+```python
+import usefulib
+
+a_string = "abcdef123456"
+reverse_string = usefulib.reverse_string(a_string)
+```
+
 ## What can it do?
 usefulib is open-source and can be contributed to by anyone. Therefore, it offers a lot of simple functions to make writing code easier and quicker. A complete list of all fuctions usefulib provides can be found [here](https://github.com/hamdivazim/usefulib/blob/main/ALLFUNCTIONS.md).