How do I make fading lights?
You didn't say if you were interested in designing / making your own dimmers from scratch (this site is mainly for people interested in that). 

You can buy programmable light dimmers. This is your safest bet, as designing your own mains electronics is quite dangerous.

Quasar electronics do a bunch of light dimmer circuits



These are self-assembly kits, so will strike a good balance between price and safety.