When people talk about productivity, they often talk about how to do things faster so that they can save time that can be used to do other things. This way they can accomplish more in the same amount of time.
But many people forget that a good way to increase productivity is improving their typing skills. The reason is simple: nowadays we spend more and more time on the computer. We use computer to communicate with our friends, create new documents, play games, and find information. We spend increasing share of our time with the computer. And despite the rise of other ways of interaction (like speech recognition), the main way of interacting with the computer is still typing. You need to type to tell the computer what you want.
Understanding this, it's not difficult to see why typing skills are important to increase your productivity. The better your typing skills, the faster you can type and the less time you need to accomplish tasks on the computer. You can accomplish more in the same amount of time and thus increase your productivity.
Of course, to improve your typing skills you need to invest time. You need to allocate time to learn and practice good typing. But this investment will definitely pay off since it will save you a lot of time in the future.
The first thing you should do to improve your typing skills is measuring your current typing speed. Just enter "typing speed test" (without quotes) on Google and you will find a lot of web sites that allow you to test your typing speed. By knowing your current typing speed, you will know where you are right now. You will also know how much progress you make along the way.
After knowing your current typing speed, you can follow typing courses on the Internet. For this, enter "typing course" (without quotes) on Google. You will get a list of typing courses you can join, many of them are free. It would be better if you browse through several courses before you commit to one of them. This way you can join the best course from the beginning.
As I said above, you need to invest your time. Allocate certain amount of time every day to study the course and do the exercises. Be disciplined to learn the right typing techniques.