first you need to find a pic host. Lots of us use www.photobucket.com
Upload the pics that you want hosted and then when you are ready to post you'll hilight the bottom link,it will have IMG beside it it will look like this
Copy and paste into the post you're working on. If it is done right it will come out looking like this;
It'* really simple once ya get the hang of it. You might want totest your pic posting in the test section at the bottom of the index page until you get the hang of it.