Some of the links on this forum allow SMF, at no cost to you, to earn a small commission when you click through and make a purchase. Let me know if you have any questions about this.
When you go to post a message, in the tool bar above your message click on the attachment selection (paper clip) and this will help guide you to posting your picture. I personally use http://imageshack.us/ for an image hosting service, but there are many others available.
You can also click on the yellow square with the mountains on itand it will say post URL here. Put your link there that you copies from photobucket or other and the picture will show when you post your thread. Be sure to resize them to forum size
Here is a link to photobucket http://photobucket.com/