Reply to pots and linear fader for midifighter customization

hi everybody!

it's a long time that i read on the community a lot about the midifighter customization but i haven't understand yet what kind of pots or faders i can use to expand my midifighter.

i explain myself better. anyone can tell me what kind of pots or fader to buy? i rally don't know how many k ohm and if a fader should be logaritmic?!?

sorry if i made mistakes or i'm not clear enough, i'm not from us and my english isn't the best in the world.

Thank's everybody! i'm waiting for an answer...