if the camera is a play toy, and the only problem is sticky buttons,
then wash it again, it might need a soak to get the dried residue off.It would have been better it you washed it immediatley to get rid of the beer
Firstly; remove the battery and ensure there is no charge left,and any cards. Then start with warm water and an old tooth brush, the a final rinse with distilled water, leave for many days in a warm place, near the back of the fridge is good.