RX-888 new purchase

Just received my RX-888 from OpenSourceSDRLab, and came here looking for discussion. Seeing none, decided to begin my own thread. No documentation is included so would appreciate any guidance from the community.

Robert KE8UQV

https://www.rx-888.com/rx/

https://www.youtube.com/watch?v=WmaB4dIh99Y

Dear friend, please see this. Thanks!