The best way to control a led

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This should get you started

N-Channel MOSFET as a Switch. Turn ON a 12V Motor with Arduino. (Step-By-Step Guide)

This is more detailed

Here is why MOSFET drivers are sometimes essential! || MOSFET Driver Part 1 (Driver, Bootstrapping)

This may help you select the best MOSFET for your application

Need a 3.3v logic level mosfet

i need to drive a motor thats about 100w @12v with a N channel mosfet. i would prefer not to have to use some gate driver and i want to connect the mosfet gate directly to GPIO of esp8266. recommendations? thanks