Q: Before i was eating less in order to lose fat.Now i became thin but i wanna obtain some muscles also in order to look better.I do only weight training now.Should i eat more then before in order to achieve that?What happens if i continue eat the same as before?

A: Yes, you need to eat enough to be slowly gaining weight and need heavy whole-body weight training to develop muscles (otherwise that new weight will just be fat). Please fill out http://www.mikesfitness.com/content/fitnessguide specifying 'Gain Muscle' as your goal for a complete diet and training suggestion.