OP, what the responses above are suggesting (rather politely, I'd say) is that you do some reading on your own before asking questions here. They're even telling you where to find the answers you seek, along with many more you're not yet aware of.
There are lots of reasons why that's a good idea, including the fact that your questions are frequently answered here and elsewhere; that no one knows where you're from, therefore what passport you're carrying, therefore whether and where you might need visas; that you're going to have hundreds of questions--maybe thousands--before you leave on such a trip, and no one's got the energy to answer all of them without some sign of seriousness from you.
On the other hand, others have previously proven themselves more patient than I.
Hope that's helpful.