One way to get an idea of some trips Around the World, is to read different stories from others. More and more travellers are posting their stories on the Internet. Have a look to the following selected websites and blog. You’ll find many kind of trips.
Note that most travelogues emphasize the experience they did, rather than the places they visit. Also, many are out of date. So generally, I don’t suggest to take these blogs as a point of reference for fresh information on where to go.