Add Tips and Tricks

**What?**
Be the first one to share your tips and tricks here! 😄

**Tasks:**
- First of all, we require a separate folder - "Tips and Tricks".
- Add a markdown file with your name and add your tips and tricks.
The content should be focused on CP and can range from general problem solving strategies to the recommended coding-setup.
- Update the README file. It should convey to everyone that how they can contribute to this repo through this.

**Additional Notes:**
- You may create a subfolder instead of the markdown file.
- Link your PR with this issue.

**Attribution:**
[USACO/Resources - Benq](https://github.com/bqi343/USACO/tree/master/Resources)
[How to practice? · Errichto](https://github.com/Errichto/youtube/wiki/How-to-practice%3F)
[GaurangTandon/CPtools](https://github.com/GaurangTandon/CPtools/blob/master/tips.md)

Start by reading the repository README and reviewing its existing structure. Create the requested "Tips and Tricks" folder with a contributor-named Markdown file focused on competitive programming, then update the README to explain how others can contribute; done means both additions are present and linked consistently.

Written by the indexing model from the issue text.