Consume loads of Carbs and Protein - If you have already looked into building muscle and gaining weight then you will already know that you need a lot of protein in your body.
One of the best ways to get protein in your body, other than protein rich foods, is through protein shakes and protein bars.
Consuming a lot of carbohydrate is also important as it gives you a lot of energy when lifting heavy weights.
It is important to take more carbs than protein.
Don't lift too many reps - When weight lifting, a lot of people don't know that lifting a small amount of weights that are really heavy is better than lifting lots of weights that are quite easy to lift.
To give you an idea on how heavy they should be, you should be lifting between 8-12 reps and the last rep should be really hard to lift.
If you are easily lifting 8-12 reps then make the weight heavier.
Keep your Body Healthy - When building muscle and weight lifting you should keep your body healthy.
Make sure that you eat a lot of fruit and vegetables as well as drink plenty of water.
Also, there are multivitamins which can be taken to keep your body healthy.
If you want to lift heavier weights, then taking creatine is a must as it increases the energy levels in your muscles.
Get a lot of Rest - When you are building muscle, your muscle tears from the weight lifting then repairs itself which makes it grow bigger.
Therefore to make the muscle grow, you should have plenty of rest, as well as increase your average protein intake.
On average, it is best to sleep around eight to ten hours a night.
Without letting your body rest, you won't be building all the muscle that could be gained.
Keep Focused - When you are trying to gain weight and muscle, this can be the hardest part.
It is important to stick with it and not get impatient as you will gain weight and muscle eventually if you have the correct diet.