I got really into F# for a couple years, and so Mark Seemann was someone I would read and watch quite often. Something I've noticed, is that F# has had very little impact as a language, but the small group of people involved with it seem really worth paying attention to. I feel like there is a chance that F#'s major contribution to programming will be its enthusiasts more than its project. For instance, check out this site by Scott Wlaschin. http://www.fsharpforfunandprofit.com