Corpfox said:
As a precaution, this may be a anti-belief to Jesus, if it is and against the ToS, by all means, delete or lock this post.
I don't think you have anything to worry about - this is the right forum for religious discussion and debate, and you are asking some great questions.
How old was Jesus when he died?
It is relatively uncontested that he was 33 when he died, and 30 at the time he began His ministry as detailed in the Gospels.
Is there a birthday, or something you give thanks to Jesus every year? (If not exact, please explain)
Christmas is the celebration of Jesus's birth. We do not actually know precisely which year Jesus was born, much less the month or day, so the decision made by the early Church to start celebrating His birthday in December was not based on when He was actually was born, but rather on when it would be most appropriate and convenient to celebrate His birth.
Easter is also a celebration of Jesus - specifically, it is the commemoration of when He rose from the grave. Again, it is not based on the actual date of Jesus's ressurection, because that information was not passed down from ancient times. However, we DO know he rose on the first day of the week, which is why Easter is celebrated on Sunday.
Finally, the Lord's Supper is a celebration of Jesus as the Bread of life - and out of the three I've mentioned, it is the only one specifically called for and required by the Bible. All Christian churches, even the most stringently anti-ceremony or anti-ritual, practice the Lord's Supper as a rememberance of Jesus.
How did he die?
Why did he die?
Who killed him?
How long did he live before he died?
Where was he buried when he died?
Was he buried in a coffin, just sand or rocks? (Explain if one, all, or none of those)
When he rose up, was he a spirit or living?
The best way for you to learn all of the above is to watch the movie, "Passion of the Christ" by Mel Gibson. You REALLY need to see that movie, which is almost universally regarded as an accurate (but VERY graphic) portrayal of Christ's betrayal, torture and death on the cross. There are many Christians I know of who have been studying the Bible for all their lives - but who never really UNDERSTOOD what Christ went through before seeing that movie.
If a spirit, was he transparent like a ghost?
No. When's the last time you saw a ghost sit down at the dinner table and eat?

Jesus did that many times after his resurrection - in fact, for 40 days. Also, remember Thomas - he actually touched the wounds of Christ, just as he insisted on doing before believing it was actually Him.
If living, was there a light when he rose and flew up the sky, or was there angels that carried him up? (Or if none of those, please explain.)
Hmmm.. don't have my Bible handy to look that up - I'm sure someone else can field that one.
How many people witness his rising from the grave?
Nobody witnessed him rising from the grave. The soldiers who were guarding his grave were struck dumb, and by the time Mary had arrived the stone had already been rolled away and Jesus was gone. Well, at least she though He was gone - He was actually standing around nearby. (I'll bet he wished at that moment that he had a camera to take a snapshot of Mary's expression, at the moment she realized the boulder had been rolled away and the Romans were gone)
Jesus's death, on the other hand, was witnessed by hundreds and is considered a historically accurate fact even by secular historians. It was performed by the Romans, who knew how to kill people and did it very effectively and thoroughly (and as the Bible said, the Romans even thrust a spear into his body to make sure he was dead before they removed him from the cross.)
After rising from the dead, Jesus was seen by THOUSANDS - not just his disciples - over a period of 40 days.
Did everyone, including the ones that hated him, accept that he rose up and forgave their sins? (If not exact, please explain)
One of the reasons that the Gospels (1st four books of the New Testament) were not written down until many years after Jesus had returned to Heaven is that Jesus's resurrection from death was simply regarded as uncontested fact. Nobody was making any serious claim that it was all some kind of hoax until the Gnostics and other similar groups started to pop up (this started to happen once there were no eyewitnesses around to contradict false doctrines about Christ). The problem of false teachings about Christ had been forseen by those who had been closest to Jesus, which is why they saw it necessary to put together a solid account of Jesus's life, death and burial (and most importantly, the significance of those things in Jesus' own words) as a definitive account for generations to come. That is how the Gospels came to be written.
Paul