Crankbaits are the hardest to figure out (ballast, bill angle, etc.). Soft plastics are the easiest with a two piece aluminum mold in your favorite bait being preferable. Myself I started out with jigs as I lost a lot of Eakins Jewel jigs and they were hard to find once I moved back to Maryland from Missouri.
For anything you want to try I would buy some pre-made stuff from Janns Netcraft, Stamina Inc., Barlows Tackle, etc. before sinking a lot of money in it. I have found that pouring lead heads has saved me money but I suck at painting crankbaits. Each person is good at different things so experiment to find what you are good at and what you need. You could be a master at making deep diving crankbaits but if the only places you fish are 6' deep farm ponds filled with grass it does you no good?
Allen