This is what the beginner's thread is for :P
Generally spins are a little more profitable than Hypers given same stakes, but the variance is also higher and therefore needed bankroll is higher.
I think the BI recommendations from nefirmative are a little too conservative. If you're willing to move down 50 for hypers and 100 for spins is often fine. But it depends a ton on your expected winrate, and in general it's better to be too conservative than too aggressive--particularly if you're not good at moving down.
As far as info, the only good book is Mers' free e-book available through husng.com. It's HU specific, and a bit out of date, but it's still a solid starting place. Will Tipton's Expert No Limit Hold'em volumes 1 and 2 are a fantastic resource for HU but are decidedly more advanced and difficult--to get a lot out of them you'll have to put in a lot of work.
As for spins, there's really only video packs. Mine (Beating Spin and Go Poker, available on husng.com) has a section about variance and bankroll management (as well as 14 hours of other content!). There's also tons of free content on husng.com you can check out to give you some ideas (including a million dollar spin and go!).
And yeah, shallow stack poker is still pretty complicated and nuanced. Even 5bb GTO strategies have limping ranges, but 5bb is around where push/fold and full GTO start converging (in both strategy and EV). Deeper than that play is decidedly not push/fold
So definitely look into solid shallow stack strategy and be willing to limp a lot.