From the Study Aids button on the Library home page, Westlaw provides digital access to Florida Constitutional Law in a Nutshell by Nova professor Robert M. Jarvis. View the Table of Contents here. This is the best single source on the subject.
Also, the Board of Bar Examiners posts past essay exams arranged by year as "study guides". There were yearly required questions through the 2001 exam (request these via 'Ask a Librarian'), and the subject was subsequently occasionally tested as an essay question in at least the February 2017 and July 2019 exams.
For current proposed Constitutional amendments click on the Initiatives, Amendments and Revisions Databases link at this page of the Florida Division of Elections.
We have 3 books on reserve: 1) The Themis Florida Bar Review book, KFF 76 .T54 2015, 2) the 1991 Florida State Constitution: a Reference Guide by Talbot D'Alemberte, KFF 401 1968.A6 D35, and 3) a text book, Florida Constitutional Law: Cases and Materials, by John F. Cooper and Thomas C. Marks, KFF 402 .A7 C66.
A newer 2nd edition in print of the D'Alemberte book, published as part of a series, is in our collection in the Florida Materials section on the first floor, call number KFF401 1968.A6 D348 2016. The Table of Contents can be viewed here. Post 1991 cases are listed.
For official material from the 2017-18 and 1997-98 Constitution Revision Commissions visit this Reference page.
Another source is Making modern Florida : how the spirit of reform shaped a new state constitution, which includes extensive history and commentary about the 1968 major constitutional rewrite.