In order to get started with streaming, you are going to need a smartphone/camera, lights, and a bunch of simple gear. For a more professional production, an audio/video mixer is needed. The Roland VR-6HD Streaming AV Mixer is worth a look. It is a compact device with streaming encoders to let you transmit 2 livestreams at up to 1080p/60fps.
This mixer has 6 x 1080p HDMI inputs and 5 total outputs, including 3 HDMI and a USB-C port. It can record streams directly to a SDXC card. It also has 28 channels of audio control. The VR-6HD Remote app for iPad lets you wirelessly control various functions. This mixer also support PTZ camera control.[where to get it] [official site]