David Slager

David Slager has been a computer programmer for over 40 years and has taught Excel for 18 years. He has been working with spreadsheets since their introduction on the PC and has taught people of all ages from 1st graders to senior citizens.

David Slager has been a computer programmer for over 40 years and has taught Excel for 18 years. He has been working with spreadsheets since their introduction on the PC and has taught people of all ages from 1st graders to senior citizens. See less