It takes time to build yourself a muscular body. You need to train at least 3 times a week, doing all muscle groups at least once a week, and doing around 3 different exercises per muscle group, for about 3 sets per exercise. Use weights that are heavy enough to allow you to do between 8 and 12 reps per set. If you can do more than 12, up the weight, if you can't do at least 6-8, lower the weight. Make sure you max out on each set (you are not able to do any more reps), as this will promote muscle growth.
Eat plenty of carbs and protein, and you will be on the right path to building a good physique.
I have been training 17 years... it's pretty much a part of my life, now.
Stick with it, you WILL get muscular. I promise you that.
suplementos desportivos