Ah. what are 'good choices'?
that seems to be a complete mystery. Letting things go red is bad (often very bad and affects your income).
Selling off items you start with -- I didn't at first, then dumped most of them. I'm still contemplating selling one of the 3D printers, since the projects don't seem to care about what I already have in assets.
Surging your "core" is interesting, shall we say. And lots of rules about how to upgrade it to your current level.
(18 minutes before I can do any more surges and another cycle after that to get enough bucks to get to level 5 -- that's the magic level to get another free book!)