The Load event occurs when a form is opened and its records are displayed.
The Open event occurs when a form is opened, but before the first record is displayed. For reports, the event occurs before a report is previewed or printed.
MS put 2 different 'Help' facilities in Access. One when you're working with forms, queries, etc and one when you're working with code (VBA). When you are doing stuff with code (VBA) there is a more complete set of help topics, etc.