Very good comments Seneca.
I’ll describe some of my study methods, in case anybody might find them helpful. URL references appear at the end.
I’m a “true believer” in writing to learn. I handwrite about nine-tenths of all the sentences, placing each phrase on a separate line. Sometimes the difficulty involves agreement; there, I underline the words that agree, using different underline symbols, for the different agreement pairs; e.g., a … dot line for two words in the dative, a _ _ _ _ for two words in the accusative. That leaves sawtooth lines ^^^^^^^, and words circled, or surrounded by a blocky rectangle. I underline only with the most difficult problems. I have about 300 pages (150 sheets, front and back) of handwritten notes on the Apology. Although I keep the notebooks, I rarely refer to them. When I reread, I just solve all the problems again.
I test my understanding against an English translation. Usually this is helpful, but sometimes not so much, especially when the translator knows a Greek idiom that I don’t know yet. Geoffrey Steadman is quite helpful on idioms.
I have the Attikos app on an iPad. I read a printed text, like Steadman, write notes in a spiral-bound notebook, and use Attikos, resting in a little stand, as a dictionary. Attikos has the full text; touching a word calls forth a parse and a very short sometimes misleading definition, with the lemma. Touching the lemma calls up a choice of dictionary definitions. If an iPad is affordable, Attikos is huge timesaver. Those who can’t afford an new iPad might look for a refurbished one, or even a refurbished iPhone. A little plastic stand for under 10 USD makes it more useful. My refurb iPad from Amazon works fine.
I also have James Helm’s student commentary. It’s helpful when I need a list of alphabetized principal parts of verbs.
I start with the first word of each sentence, and go forward until I stumble. When I don’t know the word, or can’t parse it, I refer to Attikos, and then move forward again. I keep nearby a full conjugation of an omega-class verb, for frequent reference, and a copy of Morwood’s Oxford Grammar of Classical Greek, mostly for restudy of verb forms. I think of this one-word-after-another attack as consistent with the advice of William Gardiner Hale on reading Latin.
For me, verb forms present the most daunting memory problem. Here is how I work daily on that. First, I want to memorize Helma Dik’s omega-verb table perfectly. I work a few minutes each day on that. Secondly, I do ad hoc work on problems as they appear. For example, when this morning a word resembling a dative noun turned out to be a 3rd-person-singular subjunctive verb, I realized I was clueless on subjunctive endings, so I reviewed that in Morwood. I drill for a few minutes with Mastronarde’s verb drills.
References:
Mastronarde’s verb drills: http://atticgreek.org/verbdrill/verbDrillByType.html
Wm. Gardiner Hale: http://www.perseus.tufts.edu/hopper/text?doc=Perseus%3Atext%3A1999.04.0066
Morwood’s Greek grammar: https://tinyurl.com/yckrh3px
Helma Dik’s verb table: https://humanities-web.s3.us-east-2.amazonaws.com/classics/prod/2021-01/luw.pdf
Steadman: https://geoffreysteadman.com/
James J. Helm: https://www.bolchazy.com/cw_contributorinfo.aspx?ContribID=1655&Name=James+J.+Helm%2C+PhD
Attikos app: https://apps.apple.com/us/app/attikos/id522497233