get a (good/solid/sound/etc.) grasp of/on (something)

get a (good/solid/sound/etc.) grasp of/on (something)

To attain a firm, clear understanding or determination of something. You will need to get a solid grasp of the material, as you'll all be tested on it next week. I'm trying to get a grasp on English, but I don't understand some of these idioms at all!
See also: get, grasp, of, on, solid, sound
Farlex Dictionary of Idioms.
See also:
  • a (good/solid/sound/etc.) grasp of/on (something)
  • get (one's) hands on (someone)
  • be across (something)
  • be across something
  • within grasp
  • pluck from
  • drop (someone or something) on (someone or something)
  • drop on
  • vie for (something)
  • vie over (something)