All these resources will help you learn more about cubing and how to get faster.
The SpeedSolving Forum is a great community where you can ask questions, compete online, and get the latest news and dicussion.
CubeSkills.com is where Feliks Zemdegs himself teaches you how to learn and get fast at 3×3, 4×4, 5×5, OH and Megaminx. All for free!
SpeedSolving Resources is super helpful for everything speedcubing.
World Cube Association is the website where all official competitions are hosted.
Find the best price on cubes on Cubealot.com
CsTimer.net is my favorite online timer.
Clock Magnets – buy all the magnets you need to make a DIY Magnetic Clock.