I partitioned my drive in three parts. Ubuntu 12.04 options are /, boot, usr, ext2, ext3, ext4, swap, etc. The program would only accept "/" for the first partition. What settings, and why, should I use for partitions 2, 3 or 4?
First, you must distinguish between partitions (in your example:
So depending on your disk size, partiotioning might look a bit different. Assuming at least a 500GB disk, my recommendation would be as follows:
*) Swap: Many different opinions here. I hold that with disk sizes today, it cannot hurt still reserving the size of RAM (or a bit more) for swap, just in case. I'd give it 5..10GB.
**) using an extended partition here gives you more freedom to change things later, resizing this partition, splitting it to allow for some more. Primary partitions are restricted to 4 per disk -- but you can have as many logical partitions as you like. Well, almost...