Level 1 - No Place Like Home Row
For maximum speed, make sure that you follow the fingering guidelines. For the home row, the fingering is as follows:
Put your index finger on the 4, your middle finger on the 5, your ring finger on the 6 and your little finger on the + sign. You will probably notice that your thumb automatically lands on the 0. This is a good thing.
A quick note: if your thumb naturally lands on the 7 instead of the 0, you should probably be visiting the doctor right now instead of taking this course.