The very first thing to get started with Event Proofing is to make sure your address and contact information is complete, here:
Account Controls > Manage Your Account

To get started with Event Proofing, you will need to first set your Event Proofing Payment options here:
Event Proofing > Manage Payment Settings

You will then need to tell the system all the Products you want to sell regardless if you want to sell them all the time here:
Event Proofing > Manage Products

You will then need to create at least one Price List and populate it with some or all of the products you have previously entered, here:
Event Proofing > Manage Price Lists

Detailed instructions can be found in all of these sections by pressing the little blue question mark icons.

Once you have completed the preliminary work above, you can now add an Event here:
Website Controls > Manage Pages and Galleries > Add Event

Once you set up the Event, you can then press the Upload Images tab to post the images for viewing.