I learned stat mech from L&L, and had the same problem that I never really understood thermodynamics.

I've been working through Bohren and Albrecht's 'Atmospheric Thermodynamics' recently, which I've been really enjoying. They are much more concrete, and very opinionated about ditching notation and concepts that are unclear, such as the differentials that get bandied about in most other books.

I think the key problem is that most thermodynamics books try to develop the axiomatic theory in the abstract, as opposed to introducing real materials and building physical intuition with them first.