mamathing: Do you mean you'd like to learn how to post pictures? If so, here ya go. ^_^
1st: Your photos MUST be on your computer. Either use a digital camera, or scan regular pictures in with a scanner. Or get them put on a disc for you at Walgreens, Walmart, CVS, or any place like that.
2nd: Once you've got the photos on your computer, you must find a place on the internet to "host" them for you. There are MANY places to do this, but a really good, free one is www.photobucket.com . You just register for a FREE membership, and you're all set.
3rd: Now you must upload the pictures to your host. This is usually pretty self-explanatory (as in your host's website will usually tell you what to do), but if not, look for a place on their site that says something to the effect of "Upload Picture" or "Submit Picture" and "Browse." Press the "Browse" button to look through your computer files for the picture you want to upload. Once you've found that specific picture, double click on it and then press "Submit" on the web page. Depending on your internet speed, it could take a while to upload. But once it's successfully uploaded, you will now be able to link it. Your picture will have its very own website address now that you can use in links.
4th: In order to make a link to your uploaded picture on a message board like this, you need to use BBcode. The BBcode for linking pictures on Gaia is the following:
[img]insert your picture's address here[/img]
That will make your picture show up in a post. Here is an example using one of my own pictures I have hosted at Photobucket.

That's my super mature husband.
My code looked like this:
[IMG]http://img.photobucket.com/albums/v64/badloki/ChrisNose.jpg[/IMG]
5th: Aaaand that's all you need to do. This info also applies to putting images in your signature as well. But bear in mind that Gaia has placed limits to how big signature images can be, so please look up the rules on that.
I hope that helped. Don't hesitate to ask questions if you require further clarification. ^_^