Streaming from the ground requires a camera connected to video encoder then to publishing software.
Encoders and publishing software are covered in another section on this site.
To get you up and running a simple HD camera can be used. The cost of this type can around two hundred pound and provides reasonable quality to get you started.
SONY Handycam HDR-CX405 Camcorder - Black
An entry level camera, simple and easy to use with HD resolution. Use an HDMI cable to connect to a video encoder to laptop.
-- Currys Web site link