You can either use an image tag and host on your own photo site or upload an image, which is MAX 499x499 in size and 100KB.

at the bottom of your post are "Select Image File to Attach". Just browse to your image there but be aware of the max dimension and file size.

Hovering over any button in the post gives you a TIP (above the message area where you type in a new post) on what that button does or restrictions, such as max image sizes.

hope this helps!

As users say, you can use your community gallery area, just click on your profile details and you have an image gallery.

Need more space? just PM me.