Not specifically about clans, but "Highland Folk Ways" by Isobel Grant is a good read if you're interested more generally in the culture and customs of the Highlands. It does touch on pre-clan history and the formation of the clans. Alistair Moffat's "Highland Clans" is more specific, but I think less worth reading than Grant. The Highlands are certainly the most historically loaded and romanticised part of Scottish history so there is an abundance of decent literature about it, e.g. James Hunter's "The Making of the Crofting Community" about Highland farming and Eric Richards' "Highland Clearances", or Marjory Harper's "Adventurers and Exiles: The Great Scottish Exodus", which is about the emigrations from the Scottish Highlands.

On the point of Scottish history, there are a few good introductions to general history. Neil Oliver wrote a book years back now, called "A History of Scotland".

On to my preferences, I love reading about the Scottish Reformation, which there seems to be very little good writing on. Alec Ryrie's "Origins of the Scottish Reformation" is fantastic if that's something you're into, if not a bit heavy for starters. John Knox's, the reformer, own account of the Scottish Reformation (suitably named "A History of the Reformation in Scotland" is also an interesting perspective if you get into that particular topic)

Smout's "A Century of the Scottish People, 1830-1950" is also sublime.

It's worth mentioning the National Library of Scotland's digital archives which contains all sorts of historical interests. I spent hours rifling through the digitised post office book from the 19th century Scottish Highlands. No idea why, but I had started and before I knew it, I was beginning to see what kind of lives people were living in Highland towns then. Scottish history is amazing for such a small country, and good luck with the pipes!