Questions?

What must a person do in order to be saved from damnation to hell?
Is there a single moment that a person becomes "Saved"?
Is salvation a lifestyle that must be continued?
If a person ceases to have "evidence of salvation" is he no longer free from death?
When a person dies, does he just wait for Jesus to return?
What happens while he waits?
What is baptism of Holy Spirit?
Does not the Spirit enter us when we are "saved"?
Do some not have the Spirit in them?
Isn't the Spirit what led us to Christ? Therefore we would always have the Spirit?