First off, if your going to do your school project I would recommend using spell checking, if your spelling and grammar is any less than that, you will get lol'd at.
Secondly, shouldn't content be your main concern, your doing Sex-Ed.. You should be thinking of interviewing the right people and getting alot of it down, and making sure its all short but sweet.
Thirdly, I would recommend getting Vegas Pro, strictly because your used to it and you already have it installed, this will save alot of time! You can find various ideas on youtube about transitions for your clips. Your best bet is looking for "Call of Duty Montage" you will see alot of people go to great lengths to make their videos look appealing, you could also ask the user about them
I know this is Tutorial-esque, but I know <GM>Bumblebee has a sweet Transformers intro you could "borrow", he even kindly has guides to make them on his channel here: YouTube - ‪Kanal von aaron19772008‬‏