U can also use the Image Icon at the top of your message box (red square around icon in attached picture) Then a box will come up asking you to post the URL to the image
The above post is great if you have photos on the internet somewhere then you can use the image codes.
The easiest way is during your post if you look toward the bottom you will see a New Attachment space with Browse next to that.
All you have to do is browse to your photos on your computer and once you have selected the photo you want click all the way to the right side Add Attachment.
You can repeat these steps numerous times. Picture size cant be larger that 450k.
Also if you look at the photo you just uploaded you have the ability to add it to the post.
Hope this helps and Welcome to the Club! Now get some photos up!!