Actually, it is a little flawed.
You haven't mentioned which version of which markup language you are using, what character coding it is in, don't have a head section and haven't closed many tags.
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 3.2//EN">
<html>
<head>
<title></title>
</head>
<body>
<strong>These forums rock!</strong><br>
<strong>Im learning so help me out</strong><br>
<strong>Im not sure what "strong" means but tell me</strong><br>
<small>This makes the text small</small><br>
</body>
</html>
And always try to have it validated by
http://validator.w3.org/checkThey also have a tool called HTML tIdy Up, that's what I used to clear up your code.