You gonna go on a emotional ride right now though "aah man I want it to go back to 3000 levels"... shyt like that. Just ignore it and act like you just found out about Bitcoin. It's going parabolic like crazy right now and that's often not the best time to buy but do anyway just to get in and learn more about it. If you look back at the chart it went parabolic a few times and only corrected a little bit (back when it surpassed 5K)
Some coins to start researching:
ETH, NEO, LTC, XMR,
after that a whole world of coins opens up:
coinmarketcap.com
Also don't buy at Coinbase, the price and fees are ridiculous. Buy at an exchange, Gemini, GDAX, Bittrex, Bitfinex or Bistamp. Getting account approved and set up can be a hassle though. If you want to buy right now I would join Coinbase and buy at GDAX (same company)