Congrats on having biz ambitions at 16. I would not want to discourage you from your dreams, I say keep dreaming and do your research. The electronics biz will likely leave you very disappointed though. The competition is fierce and the market is price driven for the most part. Drop shipping will leave you at a serious disadvantage.

Stick around this forum. There are lots of other young people here, and a lot of wise business owners you can learn from. With good planning and patience (difficult at 16, I know), you can be successful in business. Don't let fear of failure stop you from trying, but try to improve your odds as best you can.

Think of something you love, look for a niche market you can serve, and that will provide a good foundation to build your business on.