Hello, Ing. Alejandro Javier Villalón Navarro,
1. We kindly request that you watch the support videos tutorial located at https://www.8theme.com/documentation/xstore/video-tutotials/getting-started/ and read our theme documentation at https://www.8theme.com/documentation/xstore/.
Additionally, please explain what customization you would like to know more about, so that we can provide further clarification.
2. Regarding free shipping over $49, please go to Theme Options > Header builder > cart > edit mini cart promo message.
We thank you for your cooperation.
Best Regards,
8Theme’s Team