This is a list of places to go to get essential things such as the Genetics Kit, the Biochemistry Set, and many, many other useful things you might need while playing C3 and the DS. For some of these tools, there are more than one option to choose from; pick whichever one seems best for you.
Other Useful (and Random) Tools:

Brain in a Vat Tool

Check out here for other Unoffical Tools:
Creature Developer Rescource



The Genetics Kit:

This is essential if you want to do anything from changing your Norn's color, to making them breathe underwater, live longer, have disease immunity....the list goes on and on! I know of two Genetic Kits. Below are both, plus any accompanying tutorials. Small Note: In my Pigmentation Tutorial, I will be using the Official Genetics Kit.

Official:
CDN Genetics Kit
CDN Genetics Kit Tutorial

Unofficial:
Creatures Development Resource
For this one you will also need to download the Functional Developer Runtime Library. Scroll down until you find both.
The BioChemistry Kit:

This kit has a lot to do with chemicals, and chemical monitoring with your Norns. I don't use it as much as the genetics kit, but you might!

CDN Biochemistry Kit
The Chemical List for the Biochemistry Kit
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