Thank you very much, Frogo. That's been a thorough and helpful explanation. My thought is to deprime all my brass and inspect it carefully prior to doing anything else, but being aware of this, I'll separate the Magtech brass from the other brands and look for those tutorials you mention to remove that crimp. The primers I'll use, most likely, will be CCI as those are the ones that are more readily available here. Powder will be the French Vectan BA9 fr the same reasons.
You can bet I'm eager to start reloading. It's a nice hobby and I'll be able to both cut down on costs, and tailor my ammo for my two pistols (plus the Glock I'm looking for) and my 9 mm Luger Destroyer carbine.