All 6 parts of Royal Skousen’s ‘Analysis of the Textual Variants of the Book of Mormon’ are now available on the ‘Interpreter’ website at:

http://www.mormoninterpreter.com/books/volume-4-of-the-critical-text-of-the-book-of-mormon-analysis-of-textual-variants-of-the-book-of-mormon/

These volumes consider every significant textual change that has occurred in the English Book of Mormon over the 175 years since Joseph Smith first dictated it to his scribes. In hard copy they sell for about $50 a volume.