How do I go about doing text markup (things like Big Words, code blocks, boldface and italic text, etc.)?

I posted a version of my lesson here, and I used the standard vBulletin markup on the lesson. But in the lesson submit form, I don't know if I should keep the tags and the tags or if the person posting the article will take care of that for me.

I will greatly appriciate help thanks! I look forward to replies.
i have sent 2 lessons and im wondering what it will look like because I didnt use any codes and all :S.
Yeah, they will do all the codes for you so you don't have to worry about it.
And I'm left handed.