Supplements for muscle m and lean muscle building?

I am a 17 year old male and am looking to build lean muscle m. I am working out, but have been told I need supplements to optimize the muscle building process and maintain optimal overall health (replace what is lost in working out). I live in New Zealand and am wondering if anyone has any suggestions of any supplements they have used and enjoyed the effects of. Also I am looking for a middle-low cost variety preferably low cost as I do not have exorbitant amounts of money to spend on such things. Also a dietary plan or guide would be helpful. Cheers