Type a lot! Yup, there is no way you can type faster if you not punching the keyboard everyday.
When I was young, I want to type faster like the person in a movie that I watched. It would be very cool when you can type faster and don’t have to see the keyboard while you typing. Then, I thought I need a typing software to practice but that software does not really help me. I make a lot of errors if I use the typing technique. But in case you want to try the software, here is the link.
Then, after few years, I start blogging. From there, I type a lot because everyday I have new ideas for my blog. I did some researches and type what I have found. Day after day, my typing skill has improved. I can type without have to see the keyboard and also can type more faster than before.
When my friends asked me how I can type faster, I told them to type a lot. From there, you will able to type faster without have to learn the technique at all. If you have no blogs, use the instant messaging or forums as a practice. Good luck!