^^ to get an avatar [the thing under your name]:
click on this button up there ^
[or this one]
a new page will come up and you'll see a menu with two categories .. under
Modify Profile click on
Forum Profile Information and on that page you'll be able to get/upload an avatar, your website and your signature. ^^
you can take a look at
this thread for information on how to post up an image in your signature .. or even in a post .. ^^
this thread is about uploading your pictures onto the internet [for including pictures up in a post]..
and there's
another thread in regars to personal text [the text just underneath your username]
^^ welcome to the forum btw! i hope this helps you.