Whoops, even though I previewed, I missed this blunder: Björn Collinder’s book is titled An Introduction to the Uralic Languages. Sorry 'bout that.
I have to disagree on that one. Faroese is as incomprehensive as Icelandic.
I find that I can read Icelandic better than Faroese, picking some random web sites in those languages, I loosely estimate that I can understand around 30% of the icelandic and only a few words here and there of the faroese ones.
Finnish I don’t understand a word of.