So your not happy with your muscles, and you are thinking about a way to build muscles and you want to achieve this right away. There are many ways to do it some are safe and some can be deadly.  There are people who have gone so far as to take steroids and we all what happens, when you do steroids. You can easily take on an exercise regiment and take some protein shakes.  Or as I stated many times consult a professional and seek a trainer. You need to make sure that what ever you do is right for you, you can?t just simply pick up a book and start exercising doing so may cause more harm then good.