The whole point of learning weather is to understand why winds go the way they go, what clouds to expect and the implications of flying from to high pressure to low on altimetry.
For this understanding low pressure and high pressure systems together with the Coriolis effect and warm and cold fronts gets you 90% of it.
Other things tend to relate to variations that occur especially in mountainous country and you need to know why that can be dangerous.
If you divide things up into these sort of compartments so things have a context it might help.
It got me 95% three years ago!
Good Luck!