I apologize if this is the wrong thread but,

How would I manage to clean this?

I didn't want to use anything wet or damp because I didn't know if the wood would swell and/or warp.
Use a dry cloth and just wipe it down firmly.
Breaking stereotypes by playing indie on a metal guitar.

Current Gear
- Epiphone Les Paul Standard (Plus Top)
- Crappy Strat Copy (Redecorated, looks snazzy)
- Ibanez Acoustic/Electric Guitar
- Ibanez RG1570 Mirage Blue
- Peavey Vypyr 30 Watt
Dry cloth like the guy said or if it's too difficult to get off that way use 000 steel wool and rub lightly and parallel to the frets. After that you can put some lemon oil (although make sure it's the right kind, the local guitar shop should be able to point you in the right direction) if the fretboard is too dry (not too much and wipe off after a couple minutes).