You can read the Total Money Makeover book and do the rest on your own. However, if you sign up for a class, you can learn valuable tips (and get lots of encouragement and a place to vent with others) to help you along. One of the things I got from the classes we went to was TONS of info about couponing that I was unaware of. I did use coupons before... but didn't know about "stacking" them and websites you can go to, etc. Plus there are websites and programs that will set up meal planning for you so that you need to spend less on groceries to start with.
There are other angles and tips that you can pick up from the other class members that are not in the books, depending of course on who your classmates are. But I can't imagine there wouldn't be at least ONE thing you would pick up from another classmate that you would otherwise not get from the book.
But to get started, you really only need to read the book. The basics are that you write out your budget, divide your $ into labeled envelopes and only spend cash (from the envelopes). That way you CANNOT overspend, because if there is no $ in the envelope you can't spend it.
The hard part is that there ARE areas where it is hard to go to using cash (swiping your card at the gas station instead of going in to prepay in cash??). BUT, the "blow" $ is fairly easy to use an envelope for, and that is where I think most people tend to spend more than they realize... that newspaper, magazine, cup of coffee, fast food meal, the tip at the restaurant, the kids' birthday gift for the party they are attending... all those little incidentals that you don't plan add up.