You can probably find the basics online, as well as in books like Lyman's Reloading Manual, etc...
http://www.lymanproducts.com/lyman/publ ... dition.php
There is conflicting data out there. Some manuals tend to list lighter loads, probably to ward off any liability issues. Not every bullet will be listed in every manual, so you have to use a bit of intelligent guessing. If this isn't suitable, stick to published data with known components.
Crimping, in short, is subject to what you're doing and have done, IOW,. if you've flared a .45 ACP case to allow for lead-in with cast bullet seating, you will use a "taper crimp" to return the mouth to proper dimensions. Auto-loader pistol calibers generally headspace on the case mouth, so they
don't get a "roll crimp" (like most revolver cartridges that typically headspace on the case rim). I generally taper crimp all but the stoutest revolver cartridges.
There's much more, but I'm not going to type volumes....
...you're welcome to come down and sit in with me and discuss specifics. I use a RCBS RC, but the fundamentals apply to most issues. We can reload and shoot on-site.