You have the option to use an electronic tutorial (e.g. downloaded online) or a hard copy workbook.
The way I learned to type was using a hard copy workbook. The advantage it gives is that you can bookmark the page where you left off and keep coming back to the letter of the alphabet that you're teaching your finger to learn reflex on. This feature may not be available on a typing tutorial software. I'm not sure. But with the variety of apps on the internet, there may be a possibility for you to find a good one.
Best of luck!