you can make html display like text using
HTML character entities.
< (less than) creates <
> (greater than) creates >
& creates &
(that's how I show you without it being converted)
so, if you ever want to show and example of how to write an img tag on the forums, you can just do this:
<img src="http://tinyurl.com/pt3vuws"> and it will convert to <img src="http://tinyurl.com/pt3vuws">
I know it can be a hassle to do at first, but it's great stuff to know if you're interested in coding. you'll get the hang of it, the more you do it though. <3