The (my) Mind

In general, the way the brain works is very interesting. How it processes information how we remember things, how we recall things, how we discover things. But what's more interesting (well for me in particular) is how my brain works. It would be nice to know what types of things work better for me. I have certain strategies (that would probably be super boring to most people) that I use in trying to memorize and learn things. Whether or not they are the most well suited to my brain in particular is debatable. Actually, I personally don't greatly enjoy memorizing things (even though I do sit down specifically to memorize stuff from time to time), possibly because it seems like such a low level activity.
Anyway, lately I've been thinking a lot about memorization. Recently I realized that I don't think I have a very vivid imagination, or at least that my brain doesn't create very vivid mental pictures. Here's an example. Possibly because I'm a goober, possibly because I have a boring life, but from time to time when I'm laying in bed waiting for sleep to overcome me I do various mental activities. One thing that I do is mentally practice typing on my phone. I realize that it is not a very important skill, but I guess that time from laying down to sleeping is not always the most valuable time anyway. My phone of course uses predictive text (or T9, you can read about them on wikipedia if you don't know what that means.) So I, of course, imagine a keypad, but all I see is an array of 4x3 (or 3x4 depending if you are a mathematician or a computer scientist) of boxes. Each box of course represents a key, but I don't see any of the letters on them; I can't see any of the letters on them. To be more precise I can't even make myself see the numbers on the keys. Then as I mentally type the words I see the boxes light up. Now when I first started doing this I don't even know if I realized that I wasn't seeing the numbers on the keys, but I've become more aware that it's just the grid.
This reminds me of back when I was memorizing the digits of pi (I sadly never memorized a significant percentage of the digits). I made part of pi my password and occasionally added more numbers. At some point I was up to at least 30 or 35 digits (really not an amazing feat). I realized whenever I would tell them to someone I would feel compelled (or even need) to mock type them as I spoke them.
Anyway both of these are interesting to me because they are either some sort of memorized motion or they at least have motor activity very closely associated to them. And this is interesting because movement seems to me to be a much more basic activity than speaking and words. Makes me wonder if there is some way to associate motion to other types of memorization...

Tangentially related next activity: Write a program to teach myself 10 notes to then associate them with the digits and see if I can memorize strings of numbers as "songs"...if only we used a base 5 or 3 numbering system...