I'm still learning some of the new features the forum has. Once you log in, you can change your user information, log out, add an avatar, etc by hovering over your icon in the upper right corner. Once you add an avatar the icon will change to your avatar. Adding pictures is very easy. When you want to add an image to your post, just go down and click "Upload a File". Click the picture you want to upload and it will give you an option to post it as a thumbnail or Full Image. Click one of those options and it's added right into your post. You can now add a spoiler to your post as well. In the small icons bar above you'll see one that looks like a '+' symbol. Click that for more options.