First thing to do is NOT impulse buy. Take your time. Play as many titles as you can to arrive at a shortlist. Join FB "Buy and Sell" groups and follow sales and pricing. Go to your local dealers and play some of their games. Once you have a shortlist, do take someone with you with knowledge to assist in what to look for and pricing. You will have to increase your funds to buy a decent DMD. It might be worth buying a working game, or working project as your first pin as you learn. ask as many questions as you need to - we are all here to help each other !