gentao, thanks for starting this thread. It seems like there is hardly any info out there for getting into HGH. And i understand you having some trouble keeping up with datb.
Im not planning on any HGH for a while but i would like to start understanding it.
What dose for what goal?
2-8iu for fatloss and general well being. 10+iu for extreme cell growth. Debatable.
What time to take it is best?
Most natty GH is released at night/early morning hours while asleep. Pinning GH will suppress natty for 3-5 hours. As long as it doesn't overlap your natural production. Splitting large doses throughout the day works like a natural GH pulse.
What types/brands/color tops?
Anybody can put whatever color top you want on so don't sweat tops too much. Be aware of fakes though.
What else you need to take while on GH?
Aas goes great with GH! 
How long to run it?
Most say a minimum of 6 months.
What to do when your comming off?
Just stop, there's no hormone rollercoaster involved.