I have an online polymer clay "encyclopedia" website that covers all kinds of tools one might use with polymer clay, among many other topics.
Here are some pages to check out for beginner tools, and also for some of the more common other tools used with polymer clay (which have their own pages):

http://glassattic.com/polymer/tools_Dremels_worksurfaces.htm
(... click on "Beginner Tools"...)

http://glassattic.com/polymer/pastamachines.htm
http://glassattic.com/polymer/cutters-blades.htm
http://glassattic.com/polymer/claygun.htm

Also if you're primarily using your polymer clay to "model" things, in a sculpture sort of way --simple or more complex-- then you might want to check out this page too for more tools to do those sorts of things with:
http://glassattic.com/polymer/sculpting_body_and_tools.htm
Polymer clay can do so many more things though besides just modeling, that many clayers don't even do do figures, etc.

For metal clays though, like PMC, you'll mostly be using basic tools and sculpting tools along with "tools" like molds and stamps:
http://glassattic.com/polymer/stamping.htm
http://glassattic.com/polymer/texturing.htm
http://glassattic.com/polymer/molds.htm

If you have any ideas about the types of things you'd like to make with polymer clay or any of the techniques you'd like to learn, check out the Table of Contents page for my encyclopedia to see where that particular thing is discussed at the site:
http://glassattic.com/polymer/contents.htm
(scroll all the way down... then when you've found a category page you want to check out, you can get to it from the alphabetical navigation bar on the left side)

There are also lots of online groups for polymer clay, and some for metal clay too... you can get lots of info, questions answered, and just lots of support from those groups also if you want... check out this page for info on polymer groups online:
http://glassattic.com/polymer/groups--online2.htm

Have fun!!

Diane B.