Yeah, you should make sure to have at least a few months worth of cost of living available at all times. What you do with the rest is up to you really, I'd save it to be able to live off of for a year, then invest the rest.

Although I'm holding off on investing for now. Sold some of my 'play' money stocks (tesla etc) and put it in trackers. Might sell off those too and just wait it out a bit.