does a usb_C connect to a regular usb adapter?

USB-C connects to a USB-C port.

You can use any USB-C port on a personal computer. You can the USB-C charger from a recent Macbook Pro, an iPhone, and iPad.

If you have an older Apple Watch, can use its charging puck and power brick.

You can purchase an USB-C charger for any vendor from stores such as Best Buy, Staples, Amazon, etc... If you get a 20watt USB-C brick, the Series 7 will enable Fast Charging.