easiest thing for me is to go to
http://imageshack.us/
click on browse and look for the pic
In the "File Upload" window that pops up (after you've clicked 'browse' )select the pic you want and click open
When you are back to the Image Shack window, click 'host it'
It brings to you a screen where you have a couple different options, i.e. post a direct link to image, Hotlink etc.
I usually opt to copy and paste the info in "Hotlink for forums (1)" into the reply box of my post and voila, there's my pic.
Then I repeat for all the other pics I want to post...
I'm sure there are different ways but this was the easiest for me when I 1st learned a couple months ago
Hope this helps, if not email me the pics and I'll get them up for you until you figure it out.
You will NOT regret it, it motivates the heck outta you and you are your own worst critic...