Connector ignorance

Ok so in my attempt to educate myself here at the scholl of T.H. I keep stumbling over all the connector references given under various thread discussions . I.E. 4 pins , 3 pin , 4 pin + this or that . Is there a sticky somewhere ( that I havnt found yet ) that gives the whole list , definition , and application or do I need to search the posts and assemble it ?

I can give you a run down of the connectors:
24 Pin/20 Pin: These are the motherboard connectors, there is also a variant called the 20+4 pin connector which is both.

8 Pin/4 Pin: These are also motherboard connectors, as before there is a 4+4 pin connector which is both.

PCIe (6+2 Pin): This is the connector used for all PCIe devices, it can be used as a 6 Pin or an 8 Pin.

4 pin/ 3 Pin: These connect the fans to the mobo.

Molex: These have 4 Pins but ARE NOT 4 pin connectors, these power fans and other thingamajigs.

Those are all the PSU based cables. There are others such as SATA HDD connectors.

In your case, that would be the PCI-E 6+2, minimum of 2, 4 would be nice if you plan to run 2 gpu's or you will need to run convertors from the 4-pin molex.