Q: Lets say i eat 2000 calories a day(are these i need each day to keep up my current way)and i want to do some bulk up.If i eat 2500 a day i ll put some weight(muscles) but if i eat lets say 3500 a day i will put more muscles but fat also as well.So,in first case i will obtain muscles but very slowly and in second i will obtain muscles faster but fat as well.Is my sceptical right?

A: Yup, that's exactly correct. If you normally eat 2000 calories/day to maintain your weight, then I'd recommend starting with just 2200-2300 for bulking up -- even 2500 is going to gain you about 1 pound of weight/week which is faster than ideal. 3500 is definitely WAY too much to start with. The idea behind a successful bulk is to always eat very slightly more than needed to gain weight. As you gain weight and muscle and your metabolism picks up you'll need to up your calories a bit as well. So first month you might eat 2200/day, next month 2500, next month 2800, and so on. You may well eventually reach 3500 and even more. But if you jumped to 3500 right away you'd gain a lot of fat along with muscle -- something most people don't want.