Steele's aim in writing this book is made clear in his own words taken from the preface,
As this work is intended for the instruction and edification of the unlearned, rather than for the entertainment of the learned, words of foreign extract are used as seldom as possible. Practical remarks and reflections are rarely introduced; the principal aim being simply to ascertain and present to the reader the mind of the Holy Spirit. How far this object has been accomplished, is of course left to the judgment of the honest inquirer. The reader, however, in forming his judgment of the value of these Notes, may be reminded of that inspired rule in searching the Scriptures,'Comparing spiritual things with spiritual.' To assist him in the application of this divine rule, many chapters and verses are quoted from other parts of the Bible, but especially within the Apocalypse itself; that by concentrating the various rays upon particular texts or symbols, their intrinsic light may be rendered more luminous. Thus the interpretation given, if correct, may be confirmed and illustrated.
Appendices include a section on, The New Jerusalem, The Antichrist, The Image of the Beast, The Beast's 'deadly wound,' The Little Book, The Death of the Witnesses, The Mark of the Beast, The First Resurrection, The Identity of the Two Witnesses, Sounding of the Seventh Trumpet and The Title of this Book (i.e. the Book of Revelation-RB).
Also see Reformation CDs 13 & 14 (Eschatology) at the link below.