Contributing to the code as a beginner in rust

[hosseind88]

Hi, I love Rust and I have learned it by reading books and making some little apps with, and also I tried to contribute to Rust Compiler and I picked a small issue and successfully fixed it, but after a long time doing nothing with Rust, I have decided to focus on it again and get professional. as I can learn much better by reading code or contributing and trying to solve problems I saw this repo and I guess it would be a good choice for me to try. but I need some mentoring to be able to where I start from, so anyone can help me about this please?

thanks
and sorry I don't know that here is good place to ask this question or not, accept my apology if it's not