Overdrive, A.D.E., acsm, etc.

I have library cards courtesy of a couple of public libraries that make use of Overdrive.

I word prefer to make A.D.E. my go-to ebook reader (using a Windows laptop.)

Adobe is far worse than non-intuitive. For a company with millions of users, the website seems written by and for PhD's in Computer Science. Just "authorizing" - which I think means getting and registering an Adobe ID - seems more difficult than many routine tasks "in real life." (or has A.D.E. become a "for paying customers only" piece of software?)

I have googled - and I'm proficient at that - for over an hour and have not yet found the "trick." Hope someone can guide/advise/etc. THANKS.