How to Solve a Rubik's Cube Fast 1. Learn a new method. There are many different methods out there to choose from, each unique in some way or another. This usually entails some memorization. 2. Lubricate your cube. Buy a can of 100% silicone spray lubricant. Take apart your cube all the way and spray each piece lightly. (there may be better ways of doing this, so don't take my word for it) 3. Learn some finger tricks. Conservation of movement is essential to speeding up your solve times.
Pretty much everything here is discussed in detail in the speedcubing forum right below this forum.