Limit order practice and level 2 practice. Limit orders on Robinhood are kinda frustrating so practicing with a small amount on a real moving stock helps. I chose TVIX already near it's top, I predict it probably will go higher given the S&P's performance. Also my nerves are getting much better, even went and played some guitar while I was still in. Level 2 is an absolutely vital tool to have, I have no idea how I traded before I understood it or the Bid and Ask prices.