Memory

I want to start writing my book which I will self-publish with Blurb.  I have no intentions or expectations for its being a commercial venture, it will simply be for family.  I try but cannot start on the word section of my daughter's laptop because I am not computer savvy and I don't know how to navigate hers so I will just write in my 'secret' email account, secret because I don't want anybody to read my drafts especially I don't think I am a good writer.
I go to gmail type my username and the password I presumed were the right ones.  Obviously they were not.  I tried different combinations of username and password but to no avail.  I tried to access the right ones through the help option but I don't even know the answer to the basic questions.

My memory is so bad now, I accept I have to write down reminders.
It seems my bad memory is getting in the way of writing my memories.