A good place to start and explore is the Sticky: For the New Reloader: Thinking about Reloading; Equipment Basics -- READ THIS FIRST
located above on this forum.
http://www.thehighroad.org/showthread.php?t=238214
You indicate interest in several calibers. As a suggestion from a fellow reloader that is only 4 months into it, I'd suggest a Lee Deluxe Turret kit available here:
http://www.fmreloading.com/Merchant...928&Category_Code=Semi-Progressive+Press+Kits
Supplement this with some good manuals, Lee die sets for the calibers you're interested in, the safety prime system, some additional 4 hole turrets for your other calibers, and some calipers or micrometer, and you're all set. You can always start the search for a better scale after you've got the basics down. For way less than $200 you're ready to crank out ammo that you've loaded in a single caliber. For less than $50 more for dies and turret plate, you can do any other caliber you want.
If you're going to get into rifle reloading, consider moving up to the Lee Classic Turret kit from here:
https://kempfgunshop.com//index.php...facturer_id=0&option=com_virtuemart&Itemid=41
Most folks will tell you that the classic is the way to go over the deluxe, it's up to you to decide.