I'll agree Scott Michael's book "Aquarium Sharks & Rays" is an absolute must have.
It will cover the basics of shark husbandary - including diseases, filtration, tank sizes & basic species info.
But the book is really just the beginning - you will need to do some online research your self, of the species that you go with.
As for the egg case versus live pup debate - I've heard both sides. And the egg case side actually as has a few problems. the 1st - you could end up with a "wind" egg -whihc is basically an egg cast without a shark pup - this is rare but sometimes does happen. The second problem is pup mortality during hatching - this period in very stressful for the pup - and some pups end up dieing because of it. The third problem getting your pup to feed(after the 2 week wait), this really can't be avoided - because both side tend to go thru it.
As for required aquariums sizes for sharks. So many people will state that a certain shark requires a certain size tank. The truth is when keeping a shark in a home aquarium - it's about the tank's footprint(length & width), not it's total gallonage. For most sharks(especially - catsharks, Bamboos & eppies) the tank's depth isn't really that important(so long as it at least a foot deep).
The simple fact is there's only two species of sharks commonly available in the U.S. that can be housed in any standard size(120-240 gal. - which are all 2' wide) aquarium - these the Coral Catshark & the Marble Catshark(A.macleayi) because they both grow to about 2' in length. All other species need a custom built aquarium to keep as adults(including the bamboos).
That said - there are several species of sharks that can be housed in smaller aquariums (than the required aquarium size for an adult) as juveniles/pups for several months.
For example - Bamboo pups(any species) can be hatched and raised in a 50 gallons for the first 6 months(after that you'll need to move them to a larger tank).
By the way - that egg case - is a Brown-banded bamboo(grows up to about 40") - and requires a tank of no least than 250 gallons(tank footprint - 7' long x 3.33' wide).