The best thing to do is get a good manual, Lyman is very good for a starter although Speer, Nosler, Hornady also are fine. If you can afford it, more then one book isn`t too many to have. "The ABCs of Reloading" is another exellent choice for a beginner. The books will get you started on tooling, "how to", component choice, accuracy tips, ect and are well worth the time spent reading them.
I would skip the data sections until I read the text and understood it. The difference between rifle and shotgun isn`t all that much, but there are a few new steps and things to watch for. Don` be afraid to ask if you don`t understand or have questions about something, we all have been there and are willing to help as best we can.
As for companies to look at for tools, try RCBS, Lyman, Lee, Redding, and Forster for presses, dies, scales, ect. Prices can vary depending on your pocketbook and what you re willing to spend. I believe Lee still make a reloading kit one uses a mallet in place of a press. The cost is likely around $15-$20. Forsters Co-Ax press is over $225 by its self, dies extra. Do some online shopping and you will get a idea of what is out there for what money. Try these websites for tools, components, and prices.
http://www.midwayusa.com/
http://www.grafs.com/
http://lockstock.com/
http://www.midsouthshooterssupply.com/
http://www.wideners.com/
For up to date data go to the powder manufactures web sites, They don`t list everything thy have but most of it is there.
For Hodgdon, IMR and Winchester.
http://data.hodgdon.com/main_menu.asp
Alliant
http://www.alliantpowder.com/reloaders/Index.htm
Ramshot
http://www.ramshot.com/powders/
Good luck