I suggest learning fast.
Also from the Ari [Isaac Luria, the Ari].
From the Ari: to learn every day "מקרא, משנה, גמרא, קבלה". One session in the Old Testament, Mishna, Talmud and Midrash in order.
What this means for me is have a certain amount of books on the table to my left. Pick up one, and go through a few pages in order. Just say the words and go on. The major thing is not to repeat. No repetition allowed.
Then put it down on your right, and then pick up the next book, and go through a few pages of that one.
But besides this you need and in depth session also. That is called עיון. For that type of learning I don't have anything to say. I did find a learning partner. But in subjects where could not find a learning partner I just went through things in the old fashioned way. In Physics and Math I did lots of problems. And when I finished the problem exercises, then I went back and did them again. That is how I did Trig., Algebra and Calculus. Since then I have mainly concentrated on fast learning in the Natural Sciences.
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Appendix
(1)In Torah learning I am not suggesting that the only things to do are מקרא משנה גמרא מדרש. That is more like an introduction. I think Musar is important also. That is to go through the basic set of Musar. That is only about five books from the Middle Ages and the books from the direct disciples of Israel Salanter.
(2) If you do Kabbalah, it is best just to plow through the writings of Isaac Luria and the Remak. The rest of it is pseudo Kabbalah and not worth the paper it is written on.
(3) The excommunication of the Gra still applies. Also see the Mishna LaMelech about the general status of ban as akin to what we call איסור נדר. So you can't just ignore it. That is the Mishna LaMelech in laws of oaths. When the Rambam begins laws of נדרים that is where you find this discussion. What he says is that we know a person can forbid his object to himself and to others. All he needs to do is to say חפץ זה קרבן עלי or to others to say חפצי זה קרבן לך or any other language like that. And even if he does not mention anything else but just this object is forbidden to me or to you that object becomes forbidden. He does however have to own the object if he is forbidding it to others. The Rashbatz and the Mishna LaMelch says the same applies to a שמתא and excommunication even of the most minor type. All the more so the an actual חרם. So the חרם of the Gra is nothing to fool around with. This means that one that transgress this חרם is transgressing a prohibition of the Torah.
אני מציע שיטה של למידה במהירות, ועוד דבר של האריז''ל
: ללמוד כל יום "מקרא, משנה, גמרא, קבלה".. מה זה אומר עבורי היא יש כמות מסוימת של ספרים על השולחן לשמאלי. להרים את אחד, ולעבור כמה עמודים. רק לומר את המילים וללכת הלאה. הדבר העיקרי הוא לא לחזור. חזרה אינה מותרת.. ואז לשים אותו בצד ימין, ואז להרים את הספר הבא, ולעבור כמה עמודים.