See this legally free ebook:

  • The Sinner’s Guide, by Venerable Louis of Granada, O.P., a new and revised translation by a Father of the same Order (New York: P.J. O’Shea, 1890). With Imprimatur; and containing approbatory letter of Pope Gregory XIII. May be read online, and available in pdf, mobi, epub, and other formats, at Internet Archive
  • Another translation is also available:
    • The Sinner’s Guide, in Two Books; Book I. Containing a Full and Ample Exhortation to the Pursuit of Virtue, with Instructions and Directions How to Become Virtuous; Book II. The Doctrine of Virtue, with Necessary Instructions and Advice for Making a Man Virtuous, by the Rev. F. Lewis of Granada, Provincial of the Order of St. Dominick, in the Kingdom of Portugal, translated from the Spanish (Philadelphia: Henry. McGrath, 1844). With the favorable recommendation of the Bishop of Philadelphia. Available in pdf format on this page of Saints’ Books; and may be read online, and available in pdf, mobi, epub, and other formats, at Internet Archive.

See also these related ebooks:

On Holy Wednesday 2021 in the Roman Rite. For other texts and ebooks, you may access the List of Free eBooks (Arranged by Title), the List of Free eBooks (Grouped by Subject), the List of Worth-It Catholic Books & eBooks, and the main page of the Catholic eBooks Project.