What are your techniques to memorize and understand preflop-ranges in most efficient way? Don't get me wrong I'm not saying to memorize each single hand on the chart but to just have general and precise idea what to do with each hand.
As for me I try to memorize bottom hands and after that I go to Equilab and create those ranges from a scratch then delete and repeat that multiple times. I also read notes from the series which explain what each group of hands is good for.
Still I wonder how people memorize for example mixed ranges with different frequencies...