[pliftkl]

One of the things that made F# "click" for me was Wlaschin's "Domain Modeling Made Functional". It's largely a focus on how to think about the underlying data, and getting in that mindset helped tremendously in feeling more comfortable with F#.

[carlmr]

Wlaschin is also the owner of fsharpforfunandprofit.com, which I highly recommend.