Juicebox Lite and Juicebox Pro are so easy to use, it belies how powerful they are.
If you haven't see these already, here is some suggested reading to help new users get started.

A good overview of Juicebox; Gallery Tour:

https://www.juicebox.net/tour/gallery/

JuiceboxBuilder Tour:

https://www.juicebox.net/tour/juiceboxbuilder/

See Juicebox in Action; Options to help decide the look and feel of your next gallery.

https://www.juicebox.net/demos/

Maybe you have a question that's been asked before?

https://www.juicebox.net/support/faq/

Juicebox Configuration Options.

https://www.juicebox.net/support/config_options/

And lastly, Juicebox support home:

https://www.juicebox.net/support/

DX2300