1. Everything you need will come with the H60.
3. Relatively easy yes.
4. Exact procedure dont know, but the CPU block should be like most other heatsinks. Lining up the backplate, mounting holes, block and then screwing them together.
The radiator should be as simple as putting on a case fa, just using screws that will also go into the rad.
You can run it in push/pull for added performance, as there is greater pressure going through the rad.