Suggested kits for making RTA coils?

Looking into getting a SMOK TFV4, however when it comes to RTAs I am in the dark. I have been given lots of info for places to shop premades, however I have almost no information on where to buy kits for RTAs. Anyone have a favorite they use in regards to kits with all the tools, wire and meter for checking voltage/ohms? Any advice will be greatly appreciated!