Why is Hamlet upset in the beginning of the play?

Question:The play Hamlet

Best Answer - Chosen by Asker: The play Hamlet

I don't want to just give you the answer, but I will point you in the right direction.

Read his first soliloquy in Act One.
It begins "O that this too too solid flesh would melt..."

He explains what is bothering him regarding his father, his mother, and his uncle.

Good luck!

REad the play. DUH!

It's pretty much stated in plain English in the first scene of the play. It doesn't take much reading to find it out. You're not even trying.

Well, let's see...
Hamlet's away at college, and he gets called back home because:
-his father, the king is dead. (pretty upsetting, since he was pretty healthy the last time Hamlet saw him) Hamlet has every reason to think that he'll probably be the next king (also pretty upsetting, if you don't think you're ready for the responsibility) He gets home, and he finds that his uncle Claudius has married his mom, and proclaimed himself king (oh boy, can that be upsetting!), which also means that Hamlet's not gonna be the next king after all, which means he got all psyched up for it for nothing, and once he gets there, his mom the Queen and Uncle Claudius, the King, treats him like a pouting kid because he's grief-stricken over the loss of his dad, not to mention, they also seem to forget he's a prince into the bargain.
From heir-presumptive to regal nobody, with no one seeming to be sad about his dad's death but him.

I'd be upset---wouldn't you?

His father has died, and his mother has married his uncle within two months of his father's death.