Bluetooth guidance

I am a total noob regarding Arduino so I’ll buy the following kit to learn how to use it:
https://store.arduino.cc/usa/arduino-iot-mkr1000-bundle

I also want to start a Bluetooth project, particularly get the signal strength or get an alert when the signal is lost between 2 devices.
Should I buy a Bluetooth module? If so, any module will be enough for my purposes?

Thank you

Cloferba:
If so, any module will be enough for my purposes?

Read reply #1 again, and later consider a BT4 device. BT4 is probably more suitable for your needs.