Hello, I’m new year. I’m an outreachy intern applicant and needs guidance on how to go about the contribution phase. A link directed me here to introduce myself, but I cant find a group chat here to do that. Do i have to create a trend like this to introduce myself?
Welcome to the LLVM project 
Asking the questions you’re running into in this thread is fine, and an introduction is welcome as well, of course. There was a recent thread from another Outreachy applicant Commiting Changes to llvm-project, and you might find that helpful as well.
EDIT: Guidance in contributing to the project is another recent thread that might be helpful as a reference.