Guild can make players to come together and help each other with quests, pvp, instances, and end game raiding . Read this article for guiding you form a guild in WoW , hope you like it , now please follow with the steps :

 
1. Think out a name for your guild. Have a few variations ready because your name might be taken.

2. Make choice for some basic rules and punishment if people break those rules. Make sure they're reasonable or people won't want to be in the guild .

3. Consider the ranks and their names. Try to have the ranks make some relation with the name. If you're a chilled, relaxed guild then maybe make 1 or 2 rank names 'funny'. But don't over do the funniness, you want to look organized after all.

4. Get a guild charter from a guild master in any major city. You need 10 signatures to form your guild. Try going to starting zones, only recruit people level 10+ that way there is more of a chance they won't leave. DO NOT, under any circumstances, offer cash for someones signature, because that person is after money, not staying in the guild, and will most likely leave after the guild is formed. After you get your 10 signatures, turn it in to the guild master.

6. Every now and then try to push the top level boundary in your guild. Or maybe have a system - Every 10 people you recruit 5 levels higher ( wow powerleveling ). Unless you want a small guild then just aim small. Recruit some low levels and help them level up.

7. Start organizing your guild maybe make a website, freewebs.com, myspace and piczo can be used unless you know html / php. You will want to start instance runs now. Find a time that fits as many people as you can in and say that you will do 'X' instance at that time.

8. Now is the time you might want to start thinking about end-game. You might have a lot of new members now so arrange new raiding times to suit your newer members, but don't forget about the old members. You will either need ventrilo/teamspeak or an in-game guild voice channel for this for voice communication and you will need some people with raiding experience.