For those who are more visual learners (like me), it might help to think of the charts as overlaid sheets of transparency paper (or Photoshop layers for the youngins who don't know what transparencies are), with the top sheets "overruling" the sheets below.
For example, memorizing what to do with soft 18 is difficult - dealer A hit, 2-6 double/stand, 7-8 stand, 9-T hit for 18. However, if you think of soft strategy IN GENERAL as a sheet of hit/stand decisions with doubling decisions superimposed on top, memorization (at least for me) became a lot easier: soft 17 and below, hit vs. dealer any; soft 18, hit vs. dealer A, 9, 10; soft 19, stand vs. dealer any. On top of that, double 19 vs. dealer 6, double 18 vs. dealer 2-6, double 17 vs. dealer 3-6, etc, etc.
Eventually, though, there's no way around practicing enough such that basic strategy decisions are automatic. Even if you have the best system in the world to memorize something, it's worthless for card counting unless you have it internalized. Of course, if you don't plan on card counting, you can be as slow as you want. Heck, you can even bring a card with you to the table so you don't have to memorize! :laugh: