So are you debating between getting a kit or just getting the information off the web, right? That's how I read your question, so I could be totally off on the rest of this.
If you are doing it without meetings, I recommend eTools for the first month or so to learn the points values of things you are eating, though you could just get a book that lists them. I just like the online part because I could put the actual weights in (say 4.5 oz of chicken instead of the serving size of 3 oz, so I don't just estimate the points). You are going to need the basic information, like the formula, a foods list, and probably a points calculator, at the least, and some way of tracking what you eat daily.
I am horrible when it comes to using calendars, but some swear by them. So I am basically just using a purse-sized spiral notebook to track daily and carry my points slider and foods list with me.
I dunno if any of this helps, but I congrat you on doing your research before jumping in!