1) Go to photos. ( It is in white print surrounded by a blue rectangle at the toolbar at the top of the page. It is the third one across. )
2) Select upload photos. ( It is in the green toolbar directly under the blue one you just selected photos from. It is the sixth one across )
3) Scroll down to the box that says upload photo. ( second box, right half of the page )
4) In the box, there should be a little rectangle that says "cavy slave galleries". Press that, and select the category your photo fits into.
5) A little down, should be a small oval button that says choose file. Press that.
5) Two options came up: choose the one that fits what you are wanting to do.
6) After this, right below it is an empty place to type. Put your title there.
6) Below that is a bigger place to type ( we are still in the box! ) Put your description here.
7) Below that is a smaller space to type. Place any keywords in here. This is used so that when people are looking for specific photos, it can help them.
8) Then, directly under that, press the upload/submit ovular button.
And vwalla!
-Any questions, and I'd be happy to help!