[agrobert]

Does anyone know of any good F19 NMR reference websites or literature?

[kiwi]

Silversteins book,  "spectrometric identification of organic compunds" (http://tinyurl.com/yrddhn) has a short but useful coverage of 19F NMR, including a  list of typical coupling constants for H-F coupling in various arrangements.

[TheBigF]

There are a few examples given in undergraduate chemistry books, such as Akitt and Mann (Chemistry and NMR), a few (mainly inorganic ones) in Brisdon's Oxford Primer and you could try the web site of that author http://fluorine.ch.man.ac.uk under Research->Data Tools; you can enter a F19 chemical shift and it returns a few hits. The Best F19 compilation, however, is out of date and out of print by Emsley (I think!)

The BigF