Is there a guide on motherboard replacement?

Fried my motherboard, turns out it's not an uncommon issue, the capacitor overvolted and blew up but also fried the cpu. Is there any specific stuff about motherboard replacement I should be aware of?

Was also wondering if the i9 motherboard can be installed instead of the i7 motherboard since I'd be swapping anyway, and the motherboards ship with the cpu soldered on and I believe the ram too