These guides will help you get started making your web site an e-Commerce site to sell things, manage event reservations, or receive donations.
The e-Commerce engine acts more like a backend which is accessed by a customer through the e-Commerce Store Front, Online Event Registration, and/or Online Donations modules. The administrator accesses this 'engine' using the 'e-Commerce' menu.
To get you started with the Exponent e-Commerce system, we'd recommend you begin with the e-Commerce Setup documentation
However, if you already have e-Commerce up and running you may be interested in the e-Commerce Management documentation.
The e-Commerce documentation is not yet complete, but should be able to assist you in getting you e-Commerce site up and running.