If you are absolute new at roasting, there are a lot of information online that are freely available to you. All you have to do is to search. If you want to get your hand on a roaster and actually see a roaster in action, you can hang out at your local roastery; or you can take a seminar that many roaster makers have, some seminars charge a small fee, some don't; or you can go to a trainer that has classes to would be roaster, that cost about $1500 for a week not including hotel and airfare; or you can hire a consultant who will come to your place to get you started, that will set you back even more.