Using the following board: http://www.intel.com/products/desktop/moth...BT-overview.htm

I understand DDR3, but I don't understand about the bus speed and memory timings to get, which would be best or whatever else. When I bought my last computer, there was only 1 kind of memory that it supported and I didn't have to learn about all this stuff. I'm still kind of confused about it all.

A quick search on Crucial.com for your motherboard resulted in the following results for compatible memory along with some additional info:

# Supported DRAM Types: DDR3 SDRAM only

# Chipset: Intel X38

# Module Types Supported: Unbuffered only

# Error Detection Support: ECC and non-ECC

# Graphics Support: Dual PCI Express x16, CrossFire capable

# Max Component Density: 1024

# USB Support: 2.x Compliant

# Max Unbuffered DDR3 SDRAM: 8192MB

# DDR3 SDRAM Frequencies: PC3-6400, PC3-8500 and PC3-10600

# 240-pin DDR3 DIMM Banking: 4 (2 banks of 2)

Each memory slot can hold DDR3 PC3-8500,DDR3 PC3-10600,DDR3 PC3-12800 with a maximum of 2GB per slot.*

*Not to exceed manufacturer supported memory.

Hope this helps. I'm not too much of a memory-buff either, so I wouldn't be able to help out with the timing stuff.