What is happening???

We strted off seeing the film Hamlet and now we have begun to read the book.
We have just read a little bit but so far, as I have understood it, two soldiers and Hamlets friend Horatio have seen the dead King of Denmarks' spirit and they go to Hamlet and tells him... That is what I have understood, but theer are more details...
When Horatio and the two soldiers first sees the ghost they don't believe themselves, so they are talking to each other and convincing each other that they are seeing the same thing and that they are right... When they come to Hamlet, Hamlet does not believe them at first but he wants to find out more, and thats when we stopped reading.
It is actually quite fun reading out loud in that old languge, yeah it is quite hard to understand but i guess you lern that old language as you read more...