Hello and welcome to the forum. If you are on the home page you scroll down to the board you want - for example the African Grey section has four boards so click on the board where you want to post and then reply to a post or create a thread. There is a General Bird discussion section with four boards, and an Everything Else section with four boards.
There is also an FAQ section at the top and above that the shoutbox.
Somewhere in another universe, dear brother, you got saved.