The phrase "basic grasp" means to have a simple understanding or knowledge of something, but not a full or detailed understanding.
Sentences with «basic grasp»
Almost certainly yes, because you only need the most basic grasp of acne science to know that increasing testosterone levels can cause it. (supernaturalacnetreatment.com)
This gives you less stress to focus on the storyline and basic grasp of how to play the game. (nonfictiongaming.com)
Using the Skins Editor is far more complicated than editing a couple of custom files for someone with a fairly basic grasp of HTML, CSS, and PHP. (lawyerist.com)