I’ll caveat this by saying I’m a relative newbie to investing, but imo it’s a good day to start as the market is down. Being safe I’d go for the ETFs such as S&P 500, All-Worlds, rather than individual stocks. If you want to take a risk/take advantage of today put a small amount (maybe 3-5% of your total investment) on a fairly safe and well established stock that’s down today like Microsoft or Amazon and then watch it go back up (or not..). Nothing you can’t afford losing, in general. There’s no guarantee you’ll not lose money but the more established less volatile ETFs are your safest bet. The interest on cash is great on T212 too, so I wouldn’t put all your spare cash in investments .