The word “register” has many uses in the english language. The title “Registering Ruth” is using the word as a verb, in context of #3 below (taken from a Google search “definition of registering”), as quoted:

gerund or present participle: registering

enter or record on an official list or directory.
“the vessel is registered as Liberian”
synonyms: record, put on record, enter, file, lodge, write down, put in writing, submit, report, note, log
“I wish to register a complaint”
enter one’s name and other details on an official list or directory.
“34,500 registered to vote”
synonyms: enroll, put one’s name down, enlist, sign on, sign up, apply
“it is not too late to register”
put one’s name in a register as a guest in a hotel.
North American
(of a couple to be married) have a list of wedding gifts compiled and kept at a store for consultation by gift buyers.
entrust (a letter or parcel) to a post office for transmission by registered mail.
“a registered letter”
(of an instrument) detect and show (a reading) automatically.
“the electroscope was too insensitive to register the tiny changes”
synonyms: indicate, read, record, show, display
“the dial registered a speed of 100 mph”
(of an event) give rise to a specified reading on an instrument.
“the blast registered 5.4 on the Richter scale”
express or convey (an opinion or emotion).
“I wish to register an objection”
synonyms: display, show, express, exhibit, betray, evidence, reveal, manifest, demonstrate, bespeak;
“her face registered anger”
(of an emotion) show in a person’s face or gestures.
“nothing registered on their faces”
properly notice or become aware of (something).
“he had not even registered her presence”
make an impression on a person’s mind.
“the content of her statement did not register”
synonyms: make an impression, get through, sink in, penetrate, have an effect, strike home
“the content of her statement did not register”

correspond or cause to correspond exactly in position.
“they are adjusted until the impressions register”

late Middle English: from Old French regestre or medieval Latin regestrum, registrum, alteration of regestum, singular of late Latin regesta ‘things recorded,’ from regerere ‘enter, record.’

So, this blog is simply that; recording/writing down… registering – some thoughts, opinions and ideas, as I journey.