I'm really sorry but blogger just sucks with code. It removes any HTML tag I write and puts a blank in it's place. I can't write a tutorial without giving examples. Sorry.
I'll try to fix this problem as soon as possible.
edit: there seems to be no solution yet for blogger (only for blogger-draft). Even more of a reason to create my own website and host my blog there.
I have saved this post in .txt file and as soon as I complete my website I will post it.
Have Faith =)