Hello, I rather get some tips from some people with real good results from the gym and who knows what to eat etc.

I'm 176cm tall, my weight is around 55-58kg and I'm 17 years old turning 18 in August. I'm ready to eat whatever it takes to gain some weight and that helps some real results in the gym. I need healthy food and all but I don't know what to eat each day and how many meals per day. Please help I don't want my body to be exaggerated with muscles like these in wrestling, boxing etc. I want to have a normal muscular body.