The best mod recommendations for beginners or seniors

Mod is a body of vape that contains a battery.
Mechanical Mod / Mecha / Mech Mod - consists of a body that has a place to fill the battery, and has a connector to connect to the atomizer. Mechanical Mod does NOT have a chip for protection, so that in its use it needs a better knowledge of battery strength, the amount of resistance that an atomizer has, and also enough knowledge about electric current.