How can I type faster than 100 WPM?
Record holders can type with a speed above 200 WPM, so 100 WPM is an attainable goal.
The key to the success of any activity is regular exercise. As soon as you miss a lesson, you lose the time that you have already spent learning the previous ones. Therefore, try to set aside 2-4 weeks for regular training every day for 30 minutes.