I also think the Charles Singleton book is the 'latest' on this subject. I enjoyed it very much.
Although older, I also recommend the various Stuart Reid books on the subject. The Campaigns of Montrose, and the Osprey Auldearn 1645 in the Campaign series. Mr. Reid's view is that 17th infantry were Pike and Shot, and so the Irish brigade would have started off in the same manner. It is of course fascinating to wonder how they evolved during 'the year of miracles'.
For a Gaelic view then I recommend Highland Warrior by David Stevenson. Also the older Heather and the Gale by Ronald Williams.