Launching Campaigns without Players

Hey I was wondering if there was a way for me to be able to launch campaigns without any of my players being able to join as I would like to work on maps without my players seeing them. I'm sorry if this is a stupid question but I'm unable to locate the solution on my own so any help would be appreciated. 

Create a new page in your campaign to work on. Put the player bookmark on the default (blank) page. If you want to be particularly creative, do what I do and make a "splash page" like a comic book that contains images, titles, and quotes that speak to the premise of the adventure and offer inspiration for the players. Put their tokens there so they can work on them.

I have a nook can use roll20 with it I don't have computer right now so I don't have a cam will I be able to chat without a cam Thanks

As long as one of the members of the group is a mentor (maybe a supporter also), the campaign should have mobile support otherwise you won't have access through a nook /tablet / or a phone (the phone is not supported but some phones do work).

They cannot hear you though. Tokbox is flash 11 based and not supported.