“The Molecular Probes Handbook” has served as the “go to” resource for practical information on fluorescence probes and their applications for nearly 40 years now, even though Molecular Probes (the company) has long since been acquired by Invitrogen/Gibco/Life Technologies (for a little Wikipedia history lesson on Molecular Probes, see HERE). Fortunately, the catalog name remains the same, and is still an excellent resource. Get a hard copy, and keep it on your bookshelf – you won’t be disappointed:

http://www.lifetechnologies.com/us/en/home/references/molecular-probes-the-handbook.html

Yes, Molecular Probes also has a Facebook page.

And of course, an App too.