Learning German- Different Options to choose from for Grammar

I am new here. I am from Brazil and have been living in the US for about 13 years. I speak Spanish real well. I used to speak Italian pretty well but have been rusty.
I have been watching a lot of videos about memory palaces and mnemonics, especially the ones from Anthony. At the same time I’ve been learning German. I have been creating quite successfully memory palaces to memorize vocabulary in German.
I’ve also bought two books from Anthony: how to learn and memorize German vocabulary 2nd edition and learn German vocabulary and grammar magnetic memory package.
I also purchased the German course from linguisticator.
And I have a native tutor that I could take classes from 4 to 5 times a week.
I have already memorized Der Die Das through 3 Memory Palaces
I wonder which path I should go about grammar, since I have so many options.
I have also downloaded a bunch of applications.