Things You'll Need
Instructions
Obtain a copy of game and the expansion pack "The Burning Crusade". Download the update from blizzard so that your game version is current.
Find a private server. Private servers are servers hosted by individuals separate from Blizzard. They require no sign up fee, monthly fee, and no requirements. It's absolutely free! A great place to find private servers is http://www.xtremetop100.com/world-of-warcraft. Once you've found a server you like, connect to it. Some servers offer step-by-step guides for connecting and others don't. Here are a couple extra steps that may help connect to servers that don't offer guides.
Sign up for an account on the private server you have chosen. Fill in any information required.
Change your realmlist, this is the only step that takes any effort. Each private server has a specific address that works like a url, this is their realmlist address. To play on a specific private server, you need to change your realm list to match theirs. Realmlists are usually found on the homepage of the private server site or in a connection guide. After you've changed the realmlist you're good to go. Have Fun! If provided links to some of the best private servers below.