Ok, to put a link in a post, first go to the page you want to link to, then go up to the address bar and highlight the web address in it, then right click, and copy.
Come back here, and when your ready to put in the link, right click again and paste. The address of the other site should appear in the post like this...
http://www.randomgames.com/forum/
To make the link pretty and look tidier, you can use the following code...
[ url=http://www.randomgames.com/forum/]What you want to show in the post[/ url]
Make sure there is no spaces within the url tags though.
If you do it right, it should come out looking like...
What you want to show in the post
but still work as a link.
For images, you can either upload them from your own computer as an attachment, or visit an image host like Image Shack and upload them there then post a link to them using the tags provided. To get pictures off the web, first make sure there is no copyright on them, then right click and choose the "save image as" option. Just make sure you put it somewhere on your comp you can find it again.
Hotlinking to images (unless its an image hosting site) isn't a good idea because sites really don't like it when people do that. Its much better to copy an image to your own comp.
Hope this helps, if not feel free to post again
.