What is the best way to invest my money as a 17 year old?There are two ways of thinking about this. One is that you're young, so if you lose big, you still have time to recover. The other is that since you are young, you have more time to allow your investments to grow, and therefore need to take less risk.
As for the amount, you're probably not going to get a heck of a lot with $1,000. Consider that many online brokers charge about $10, you're already down 1%, just from the cost to buy a single stock.
With that small amount, I'll suggest, as I often do, to give Motif a shot. You can buy an entire collection of 30 stocks for $9.95. TDAmeritrade has a lot more options available for investing, but you're going to lose all our money on fees, pretty quickly.
I'd maybe split it between 5 - 10 stocks, each with a good potential for growth. Always do plenty of research on the companies before you invest of course.