Ummwelcometonoobstown. If you have earned enough noobz, you can go town-hopping. (Actually, just one vote will give you 500 noobz which is more than enough to tour all the 40-something towns currently on). It's /town list to check the names of the towns, and /town spawn townname to get there for 5 nbz. Some towns are open, and you can readily join em (like Skyland). Some towns are old and sort of inactive but are large and have great builds and facilities.
You can be part of only one town, but if you want to have plots in another town and live there, that is possible. Look for [Embassy] plots or ask a town staffer if you can buy one. (This makes it possible to actually live in 5 towns, which I've done before lol). Be careful though; if one leaves a town, they would lose all their plots.
Good luck!