There are many different type of supplements you can benefit from. One of the main supplements I highly recommend everyone needs is a good quality protein powder. For example, one of my favourite protein supplements is Allmax Isoflex. It is a perfect protein right after you workout (Peanut Butter Chocolate, my personal favourite) Muscle growth occurs whenever the rate of muscle protein synthesis is greater than the rate of muscle protein breakdown. It is important to have an adequate amount of quality protein especially when you are working out. Supplements help achieve this source.
Also it is important to have an adequate amount of BCAA’s which are the building blocks of protein, I recommend Allmax Amino-core (watermelon is my favourite flavour)