"Heaven"
If you die before the rapture and you are a christian, your soul will be taken to heaven. When Rapture occurrs, all christians will dissapear, their clothes will fall to the ground, fake teeth metel plates and anything that wasn't originilly in your body will remain. All the christians who died before the rapture, and the caught up in the rapture, will be re-united with their bodies, but evry aspect of the body is perfect in every aspect.
Part of heaven being heaven will be Enhacned senses, Colors will look more vibrant, thing will smell better, Some think that you will be able to see and hear the entire electro-magnetic spectrum (Just a theory).
The tribulation
What about the people left on earth? After the rapture people will get a second chance to repent. Those "Second Chance" christians will get a reward if they survive the 7-year tribulation.
The tribulation will last seven years and will consist of world unity under the anti-christ (Bad, bad person). The anti-christ will be incredibly charming and charismatic and he will have ties to romania. A call to countrys to give up all of their weapons to the new world goverment. There will be several disasters that will take thousands of lifes. There will be "Soul Harvest" in which over 200,000 people will saved.
Gods 1,000 year rule.
After the tribulation God will set up a 1,000 year kingdom on earth.
I don't know much a bout his reign besides the fact that "Second Chance" christians who survived the tribulation will rule under him.