Complex sentence: David Bornstein has noted the novelty of ALISON's provision, without cost, of online workplace skills training; though academic instruction has been made free in the mainstream by innovators such as Khan Academy and Coursera, Bornstein notes that' practical skills training is usually expensive.
Split into simpler sentences: David Bornstein has noted the novelty of ALISON's provision, without cost, of online workplace skills training. Though academic instruction has been made free in the mainstream by innovators such as Khan Academy and Coursera, Bornstein notes that' practical skills training is usually expensive.