Too bad I didn't keep a copy of my original post. That's because you didn't indicate how to send the post. So I'll try to reiterate my original post. I've been using familysearch.org for many years. At one time I was a familysearch missionary at the JSMB for 12 years. I want to accesss the partnership sites. It used to be a simple procedure. Now it is a nightmare to access. I used to to able with the keboard stroke get into the sites. Now, I was asked to put user name and password. So while using familysearch.org I entered my user name and password, only to be informed that it was not valid!! Many changes have been made to familysearch.org - and not to make it easier for folk who have used familysearch.org for many years. Why is it not possible for familysearch to provide classes either on line or at the SLC familysearch Library??? Oh yes, FamilySearch is now using Facebook - insane idea. I went there and could not understand it. It had something about using Adobe Acrobat without giving any indication how to associate familysearch with Adobe Acrobat. I'm sorry for this negative post but I've spent hours on familysearch trying to figure out the changes.
If you are in the US/Canada, you can call for help - https://www.familysearch.org/en/fieldops/united-states-and-canada-contact-us
There are also regular classes online https://www.familysearch.org/en/library/classes and most are recorded so that you can watch them again or when it is convenient.
@Margaret Elizabeth Jones FamilySearch isn't really "using Facebook" in any way that you need to be concerned about. When you want to sign in to FamilySearch you now have more options than just your FamilySearch username and password. You can also sign in with Google, Apple, Facebook, or Church Account. Each of those are simply options for your convenience.
If you have an account with one of those providers, it might give you an easier way to sign in to FamilySearch, particularly if you have forgotten your FamilySearch password (which it sounds like might be your situation) or have not yet set up a FamilySearch account. If you don't have an account with that provider or would prefer not to use them, just ignore that option.
@Margaret Elizabeth Jones Regarding the "partnership sites", the process for obtaining or linking an account with those partners is pretty much what it has always been, although the look of the page and its name have been updated. Just go to the Membership Subscriptions page: https://www.familysearch.org/access/member-subscriptions . Then follow the steps for the particular partner you're interested in. If you have difficulty, you can get help with the process using the help option that @Áine Ní Donnghaile linked to above.