You can use either bgb or gambatte, provided they're recent enough versions.

I've linked the emulators below, and you can find ROMs and save states in the 'Resources' section if you don't have them already.

bgb: http://bgb.bircd.org/ gambatte: https://github.com/Dabomstew/gambatte-speedrun/releases

I'd recommend gambatte r604, it's what I used before switching over to console

And also welcome! Have fun learning and running the game!

Maybe you wanna join the community discord... that's where all the magic is happening =)