You should get the cron job automatically if you were deploying from Capistrano.
Using the System
You should be able to visit the webpage with just the hostname (ie http://localhost)
Create an admin account
Click on "Sign in" in the upper right corner of the website main page. Set up a default identity with administrative privileges using the following properties.
firstname.lastname@example.org <some password>
You can also create an account from the command line in the root of your avalon install:
bundle exec rake avalon:user:create email@example.com_password=password avalon_groups=administrator
You can find specific information about using the system in the Collection Manager's Guide. Sample content is available for your convenience. Upload new items individually or by batch directly via SFTP using the avalondrop account you created above.