Manual On RoboHelp 2020

Training and reference books are two different things. The first gets you up to a certain level while reference is detailed. 

Kevin's book that @Jeff_Coatsworth has mentioned is for learning and is the only book around. However, it doesn't go into the level of detail I thought you were after. For training certainly Kevin's site is where to go.

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My site www.grainge.org includes many free Authoring and RoboHelp resources that may be of help.

You might want to have a look at Kevin's book - https://www.iconlogic.com/adobe-robohelp-2020-essentials-workbook.html

I visit your site often, but even it cannot reference every element, function, feature. Adobe should be the one to do that; it's their product.

Good documentation can tip someone into being a buyer. I chose RoboHelp because I'd had experience with it. Now I'm stuck with it.  The videos Adobe puts out as tutorials are really marketing tools.  My company is wondering if there are training packages we can buy.  There are none on LinkedIn Learning. 

Adobe spends so much effort creating features then leaves cryptic crumbs behind on how they might be used or ignores them entirely. 

By @bfreed01

People tell me that's why they find my site useful.:-) 

The problem with writing a manual is payback. With updates to the product every few months, it is out of date virtually as soon as it hits the shops or Amazon. Dummies Guides tried it once I think years ago and then realised.

Even when the updates were fewer, you couldn't sell enough copies to justify the work. 

________________________________________________________
My site www.grainge.org includes many free Authoring and RoboHelp resources that may be of help.