Disclaimer: What you do with this information is up to you. You are fully responsible for what you do with this info, and how you use it. HackMethod is not responsible for your actions. Please do not hack Wifi points that you are not allowed to.
NOTE: I do advise having a USB WiFi adapter, and an extra point would be to get a great one like the ALFA AWUS036NHR or AWUS051NH. Although any card would do as long as it supports monitor mode and packet injection.
When it comes to the world of WiFi hacking, the possibilities are only limited by your imagination. Skilled hackers can combine attacks together for increased efficiency, and can also judge on which attack is best to use given a particular situation. By the end of this guide you should have an overall idea on the types of attacks that you can use against any WiFi-enabled AP or router.