Do i need a resistor between my mcu and a mosfet?
Your quoted paragraph is correct: the gate is high impedance and a resistor is not required for small MOSFETs.

If it is switching frequently, then a small resistor (tens to hundreds of ohms) is suggested to suppress ringing and reduce emitted electromagnetic interference, especially if the MOSFET is on the end of a long wire or PCB track.

You may want to have a pullup or pulldown resistor to provide a default (or or off) when the MCU is not programmed, or held in reset.

(Large power MOSFETs are a little different, and may need a special gate driver to achieve good results).