Aha! I am happy to answer this one.
First of all, congratulations on asking. This is what he needs - support. So here are my thoughts:
Trading is a lone wolf business, and a lonely business. The very nature of it demands that you do your own thing and not be unduly influenced by tips, opinions, even news. This makes it a lonesome trail. There's nothing for you to do with regard to this; just be aware, but don't even think about becoming a part of it for now.
If he is day trading, he needs absolute uninterrupted time - with no exceptions, except true emergencies. Even if he's swing trading, he needs time to concentrate on the next trading plan. Give him that space.
No matter how good he is, there will be periods of consecutive losses. This is very difficult for a trader to deal with, not to mention the stress it may place on you. However, it is normal and an unavoidable part of trading. Have patience. :whistling
Most people who try to do this for a living fail. They lose money. Most of his and your friends and acquaintances know this and may be naysayers. You will have to put up with that, if it happens. Don't let them discourage you. Given enough time and education, anyone can learn to trade for a living. It all depends on your commitment, willingness to press on, and depth of your pockets.
As for what he will be doing, that depends on his trading philosophy and methodology. But regardless of what that is, he will probably be looking at a lot of charts, spending a lot of time at his computer, and doing a lot of analysis of one kind or another. :smart:
I hope this helps. Let me know if you have any more specific questions.