welcome to the kingsnake.ca forums.
to make signatures etc, you need to look near the top right of the screen, right underneath where is says 'canada' in red letters. you will see My Account. click on there and you will be able to change your password and other info about your account, and set up a signature.
if you want to post pictures, near the top center of the screen, there is a group of links to various areas of the site. look for photo gallery. you can upload pictures into the photo gallery for free, up to 4mb total. once you have pictures upload, everytime you create a post, at the bottom you will have an option to include a picture with your post. use the preview button to make sure the picture does show. use the Tools and Toys link at the lower right corner of the window you type your message in, to learn how to do other things with your post, including posting multiple pics or links.
the FAQs link also will give you additional information.
i myself don't own any iguanas but do find them fascinating lizards. they were my first choice to get as my first lizard pet years ago once i moved out of my parents home. but after doing alot of reseach on green iguanas online, i realized that they were not suitable for the first time herp owner so took a bearded dragon instead. i don't even have the bearded dragon anymore, had to sell her when i moved to a different city and had to stay with friends till i found my own place. but, i still do want to get a green iguana once i purchased my own house and have room to properly house such a large lizard. though most likely i won't buy a baby green iguana but instead, adopt a rescue.
hope to see pictures of your pair soon.