As an accomplished trader, what advice would you give OP ?
Here's my 2 cents:
First of all he needs to be realistic. It takes a LOT of time to get to the place where you are consistently making money. It can take years and years of very hard work and dealing with draw downs/failure at times. You will think you have it down and are on a roll, then go into draw down periods where you start thinking you can't do anything right. I always tell people that the great thing about being a trader is each day is never the same. You never know what you will be dealing with each session. For my personality that's great. I can deal with feeling like a champ one day, then a chump the next. I never get too high on the great days or too low on the bad days. The OP better be able to deal with that. Trading is a complete mindf*ck at times. To me if he doesn't think he can deal with the above, then don't bother.
As far as his situation? I would say have 1 year of living expenses saved up if he doesn't have a job on the side. When I say a job on the side I mean a job during non market hours. If he wants to make it as a trader he'd better plan on sitting in front of the screen during market hours. Some might say 1 year is a bit much, but why put anymore pressure on yourself? Trading is enough pressure.
I'm not sure what he plans on trading, I don't think he said....but whatever he starts trading in, trade TINY size. If he is a futures guy make all of your mistakes on one lots. Trade tiny for at least 6 months. I am not a fan of Sim trading as it is nothing close to reality. Between the generous fills and not feeling the pressure of a "live" trade, to me Sim trading is a waste. The only reason to trade on a Sim is to get used to the execution software. That's why I would say have a year of living expenses on the side. As a new trader get it in your head you aren't going to be bringing in any real money for at least a year. My first trading gig was a month after college. I lived at home for a few months. Then lived pretty inexpensively with 3 buddies from college in an apartment. I learned to really appreciate Subway sandwiches.
As far as "how to trade?", I don't think he mentioned any strategy....but my advice. Come up with your OWN strategy. One that you create and will live by. You will learn a ton by creating your own "way to trade". Back test as far back as you can and see how it did during different market environments. Forget these people who "teach" you how to trade. If they were really any good they wouldn't be teaching, they would be trading. I would read books that talk with the great traders out there. Interviews with them talking about how they made it and the mistakes they made, are priceless. Here are some of the ones I like, and re-read each year. You can never stop learning:
The one thing I didn't like when reading what the OP wrote was "get rich" a lot. Huge red flag. If he is looking to get rich quick and just worried about becoming some millionaire trader right away then he probably will fail. Those guys always do. He's a 21 year kid. Plenty of time to get rich and own yachts and all of that. He should plan on living a very "modest" life. Hell, the first year plan on making squat. Could take a few years of making squat. Time will tell.
Sure the money can be great, but you have to want to become a trader for many more reasons. The first being you LOVE to do it. Also if you get to the point of making consistent money you live your life the way you want to. Don't have to answer to anyone. It's a great way to live.