Nem,
You are taking your first steps into the wonderful world of reloading, you are going to really enjoy your new hobby! I enjoy reloading so much that I like going out shooting even more now just so I can get empty cases so I can reload more
! I hope you've been saving all your brass.
I made a post over in The 642 Club that you may recall where I went over my setup. Here's the link:
http://www.thehighroad.org/showpost.php?p=3217143&postcount=2082
As I stated in that 642 Club post, IMHO, a great place to start is with the
ABC's of Reloading, 7th Edition by Bill Chevalier. It doesn't give any specific load data, but it is the best introduction to reloading that I know of. And I think you can order it from Walmart.com cheaper than anywhere else.
There is a lot of great, high quality equipment out there. So it is hard to go wrong from that perspective. It is just a matter of picking the press that best meets your needs. For me personally, I planned on reloading around 400 to 600 38/357 rounds per month. Which I did for a while, though between being short staffed at work and my wife throwing her back out recently (picking up our 9 month old BIG boy) I haven't been out reloading/shooting lately. Also, space is at a premium so I wanted a press that would be relatively compact and highly versatile. Finally, I was on a tight budget.
In the end, I chose the Lee Classic 4-Hole Turret press. As others said, you can run it as a single stage press for starting out and reloading rifle ammo. And you can run it as a semi-progressive press for reloading pistol ammo when you get comfortable with the process. I can comfortably reload 150-180 rounds of 38 special per hour. Some can load 200+ per hour, though I weigh every 10th or 20th charge just to be extra careful. Setup is pretty straight forward. I found the videos on Lee's website to be especially helpful:
http://www.leeprecision.com/html/HelpVideos/video.html
One thing I really like about the Lee Classic Turret is since the dies mount so close to the vertical centerline of the press (where the shellholder and ram are located), operation of the press exerts less twisting/torsional forces on whatever surface the press is mounted to. So a massive, bulky bench is not a necessity. My bench is plenty sturdy, though it is obviously not built like a battleship, as some benches are. It works perfectly:
As for reloading .45-70, I know the Lee Classic Turret can reload 50 BMG, though in single stage mode only (auto index disabled). So I would assume .45-70 would be possible, though you can always call Lee.
I purchased my kit from Kempf Gun Shop:
http://www.kempfgunshop.com/products/reloading/leeprecision/kits/KempfKit.html. The price of the kit and components is
very reasonable. Shipping was less than $20, which included 2000 lead 38/357 bullets! That reminds me, Kempf has great prices on their lead bullets. 2,000 158 grain 38 Special/357 Magnum round-nose flat points sells for just over $100, including shipping.
Good luck with your decision. There are a lot of smart people here on THR, and they all offer sound advice. Pick what you think will best meet your needs/uses.