This phrase often implies you're still learning to understand subtle aspects of a topic or activity. Although I've studied French for a year, I don't quite have a feel for its idiomatic expressions.
Pro Tip 2/3
Not Quite Mastery
Using this phrase suggests you haven't mastered a skill, but you're developing a connection to it. I'm starting to have a feel for driving stick shift, but I still stall occasionally.
Pro Tip 3/3
Cultural Nuance
A feel for something can involve cultural nuances, like understanding humor or etiquette in another culture. You need to have a feel for British humor to really enjoy their comedies.