Please make sure you understand proper betting strategies. That is more important than learning all of the playing deviations. If you are playing shoe games, you can get something like 85% of the full value of counting just by betting properly and using 3 or 4 indices (insurance, 16vT, etc.) and using basic strategy otherwise. There is value in knowing all indices, but if you are making very few playing trips, I'd focus on keeping it simple to avoid mistakes.