First, before you spend more than the cost of a cup of coffee, you read back a minimum of 4 years here in the General, Newbies and Recruiter forums. You don't have to read every single word. You do have to read every single thread title and whenever any one of them seems like it might be the least bit educational and helpful you do read every word of it. That's equivalent to going to university and getting your basic expediting degree. Then you'll know enough to know what you don't know yet and what to ask about. That's the part equivalent to getting your Master's degree.
Then, your smartest move, would be driving for an owner for a few months. You will learn a GREAT deal during that time of how expediting really works, what waiting for days inside a walk in closet feels like etc. and whether it's really what you want to do. If so, buy your van and get to work with a MUCH stronger foundation. If not, you haven't lost 1/2 your money in high mileage and depreciation on a van.