That is definitely a "Square Deal B" press. Dillon can help you with anything you need, but most important is the knowledge of reloading first.
I had one of these for a few years and loaded tens of thousands of rounds on it before I bought a Dillon 650. Great little pistol press for a good price. The dies are specific to this press, so you cannot get them anywhere else but Dillon. They are reasonable to purchase. Spare parts kit is an essential, and Dillon will ship replacement parts to you for free + shipping.
Find someone who has a LOT of reloading experience to help you with the press. Don't let someone who "did this once" show you how, as this is a recipe for disaster and frustration.
A little story:
I sold my Square Deal (after I replaced any worn parts) to a co-worker who was into IPSC and wanted to reload. I had done the reloading for him before this on the Square Deal. I gave him a tutorial on how to use the press and reloading in general. He had one pistol.....a Para-Ordnance P16-40....and I told him specifically (actually wrote it down for him) the exact powder/primer/bullets that the press was set up for. I told him "DO NOT CHANGE ANYTHING" without talking to me first.
The next time I saw him he was at an IPSC match a year later (he retired). He was wearing a Glock 22 gun on his belt. I asked him about the press, and he seemed to be hesitant to talk about it. Apparently he had changed powders (because someone told him there was a better powder) and didn't change the powder measure to accomodate the difference in charge loads. He blew up his gun............that is why he had a Glock now. When I asked him about the load for his Glock, he said he was using the press, but the rounds were tough to get into the mags. He was using longer than SAAMI spec loads with lead bullets in a Glock. I pulled him aside and told him that he was looking for more trouble with his reloads if he kept on doing what he was doing. I was VERY serious with him just to make sure he understood. He was lucky the first time.........maybe not so the second time.
This is just one of the stories I can pass on about reloading. I have successfully reloaded hundreds of thousands of rounds safely myself (knock on wood), but that is because I am vigilant about watching what I am doing and learning about good and bad practices. This doesn't mean I can't make mistakes. By being careful, I am just placing the odds in a better equation for myself.
Reloading is fun and educational at the same time. I remember the first time I pulled the trigger on a round I made myself. It was awesome!! Good luck in your future reloading, and please be careful!