Skinny Guy Weight Gain Tips :/ i need tips! some one help!?

im 16 and im slim ive started eating food with alot of calories and drinking alot of water and im going gym 3 times a week is there any way i can put weight on fast i need some tips some one said i should try takeing creatine tablets and drinking lots and lots of water nd keep eating and eating can some one just give me some tips and could some one do me a good food timetable that i can follow thanks :)