If I could take any one of the courses which is best to take then? http://www.netsuite.com/portal/services/training/catalog.shtml I used SAP at a previous company. Then QuickBooks. I am now in NetSuite for 2+ years. I do the trainings that come with my login. Read what I can online in Reddit etc. I am working with @mattdahse book. I have basic HTML, CSS and JS knowledge.