Can I create beautiful links using the plugin?

At this point you are not able to customize your affiliate links and make them look pretty.

You can not make an affiliate links (e.g. http://www.shareasale.com/r.cfm?u=[partner-id]&b=[extra_attribute_1]&m=[program-id]&afftrack=&urllink=[deeplink-url-encoded]) look like: yourdomain.com/product

We are however working on such a feature so it will become available sometime in the future.