Came across https://www.techauthority.com/ which provides some service info including service manuals and training manuals to purchase.
Offers subscriptions including short-term, I haven’t had the time to fully figure out to what information that gives access to, appears it provides much including data to update SW in modules using some scan tools.
It is a great idea, and a start, but the search function is not adequate, applicable years are not always given for the manuals, not enough detail such as depth in training manual, no e-version of documents AFAIK (some are on CD, some paper print-on-demand), and actual ordering is clunky at best (at this moment I cannot get items into shopping cart).
At $14. the paper training manuals sound reasonable.