Actually there are three main options - a package, a nuc or a swarm. If you are a first-time beekeeper, leave the capturing of a swarm till a little later in your beekeeping "career". You have a lot to learn - all of it fun!
Both a package or a nuc work just fine. If you are using Warre or Top Bar hives then a package is the only option. A nuc is an excellent choice for a first-time Langstroth beekeeper.