When you explore other locations they are loaded in a very similar way to how Playstation Home loads its areas, so it can take a minute or two to switch between locations but once you find an area that you like and if it has a lot of users you will have plenty to keep yourself occupied.
First off if you have ever tried Playstation Home or Second Life you will be familiar with how the basic software experience functions. You can create your own personal Avatar, dress it in any clothing you see fit and then login to a central hub area where you can either talk to other users or visit other locations.
