use pin 0 (RX) and 1 (TX) for wireless connection

A small bump with two small questions, just to make sure I understand everything correctly, being the beginner that I am :wink:

  1. It is only possible to connect 1 device to the Arduino via the Serial (rx, tx) port, right?

  2. Is it possible to connect multiple SPI device to the Arduino? Arduino being the master with multiple slaves?

Thank you once again! :slight_smile: