Start with something like the Kanger sub tank mini. It comes with 3 different pre-made coils, and also a rebuildable deck (RBA) once you start trying to make your own coils and re-wicking. You can use the pre-made ones while you tinker with making your own. Search online for for the Coil Master Kit V2. It is a great all-in-one kit with everything you should need. The upfront may cost a little bit, but you'll save a lot of money down the road if you really want to get away from paying $3+ for prebuilt coils as well as piecing together a nice little tool kit (trust me). Harbor freight also has inexpensive screwdrivers. They are great for working on your tanks and/ or RDA's, but can also be used for coil winding if you want. Go to a local vape shop as well. They do it all day long and should be able to help you do some builds right in the store. Poke around on you tube to watch some videos. You'll screw up more than a few coils, and wicks, but like most things, it gets easier the more you do it.