Welcome to the Bitcointalk forum!

Don't worry, even if it looks complicated and strange, you will get used to it. Just be sure to read the top topics which are pinned in order to familiarize yourself with the board you are in. Each board has its own subset of rules that you should follow. The pinned topics have a next to them.

If I were you, I would start with the general help section: https://bitcointalk.org/index.php?action=help