The internet is a great resource for your film making. Not only is it full of information at your disposable, you can also communicate with each other synchronously and asynchronously. I'm going to show you how to use that to your advantage through Google Drives.
Last semester I was introduced to Google Drives over a production assignment. We were able to edit the same documents at the same time and upload files for each other to view and edit. I decided that this would be a valuable resource in my future projects.
With Google Drives you have up to 15GB worth of storage. You can share the folders and responsibilities between several accounts. You can set permissions to "can view", "can edit", and "can comment" for all the files and folders.
Through Google Docs, you are able to edit, view, and comment on the latest version of the script at all times. Through an Add-on called Screenplay Formatter, you are able to type your script up in standard screenplay format, similar to programs like CeltX.
You are able to set up electronic spreadsheets to stay up to date with your crew, cast, and props list and all edit it simultaneously or separately. It has all the features of Microsoft Excel and such spreadsheet programs. It's is easy to pick up if you've had experience with spreadsheets before.
You are also able to upload pictures, videos, and various other files onto the drive. That way your main crew can have access to location scout pictures, actor headshots, resumes, audition videos, and etc.
The best part is, it's all free. Stay organized and up to date with all your filming documents through Google Drive. (Note: I'm not a sponsored spokesperson of Google, although I do think they are awesome. ["Blogger" ,however, IS supported by Google])