Officially introduce yourself to the community by sharing your goals, obstacles or accomplishments. Don't be shy.. we're all here for the same reason. The more support we share the easier it will be to reach our goals!
At your age you shouldn't need any supplements, go to the specific diet and nutrition forum and read and eat from the "grocery list for healthy eating", gains should come easily to someone your age with proper nutrition and rest. Read up on diet also...maybe read "diet thread" in the same forum. Good luck and welcome to FT!!!