how do you post pictures?

hey guys, retard here. i just loaded pictures onto my comp for the first time and that shit was easy. then i posted them in a gallery on rollitup.org, also easy. but im sofa king we todd did, that i can't figure out how to post them in threads!! lemme know whats up!

Go to 'manage attachments' then upload the pic(s), then click on the paperclip on the reply box to 'inset attachment'