The National Library of Scotland has provided about 400 genealogy books online. The link below takes you to a Blog ("An Old Scottish Blog"). The blog entry, organizes the books by title family, and each title has a link to read it at the NLS website.
Once you get to the reader, you can search for terms within the book, print, download, etc.
If Scottish ancestry is your focus, don't forget to nose around the Blog itself. It has great articles and leads.
Scottish Genealogy and Family History Research - News - Genealogy and Family History in Scotland:
'via Blog this'