I need help with Dolphin(noob here)

[Platina]

Isn't it basically the same as using a GBA emulator? I use VBA and all you need to do is drag the .gba rom into the emulator to run it

Likewise, download the .iso game file

then open Dolphin

Click open on top left, find the .iso file and open to run

(I had more trouble with controller connections :p)