You should know both the universal and the personal, the realm of forms and the freedom to not cling to them. The forms of the world have their place, but in another way, there is nothing there. To be free, we need to respect both of these truths.
Of this I am certain, that no one has ever died who was not destined to die some time. Now the end of life puts the longest life on a par with the shortest... And of what consequence is it what kind of death puts an end to life, since he who has died once is not forced to go through the same ordeal a second time? They, then, who are destined to die, need not be careful to inquire what death they are to die, but into what place death will usher them.
Read. As much as you can. As deeply and widely and nourishingly and irritatingly as you can. And the good things will make you remember them, so you won't need to take notes.
You seem so clear about who you are. So certain that you are just right as you are, that for all your intelligence and maybe in spite of it, you never seem to need a second opinion.
Certainly we do not need quantum mechanics for macroscopic objects, which are well described by classical physics - this is the reason why quantum mechanics seems so foreign to our everyday existence.