you just need to buy the cables and let your contractor run them for you

as for terminating them at the keystone, you can get diagrams from many sites, it's just pushing the cables into the pins, no crimping required. you can always pull a little extra in case you want to redo the keystones

as for patch cords, can buy off any computer shops, pre-crimped

Home networks is the term used for 'networking' your home. Think of a cybercafe, and imagine each PC is one room in your house, all connected together (whether wired or wireless)

This was at one time were a rarity, only for those who had the 'know-how'. It has evolved mainly from Cat5 (100Mbps) to Cat5e (around the same time), and now people are moving towards Cat6 (1 gbps) networks.

Advantages of Cat6? able to have higher (or simultaneously high) data transfer between devices, of course bottleneck is your disk, or whatever medium you write or read from. Also can be used with the new HDMI splitter devices to stream 1080p.