Hello,

I just need your help guys with reading the serial monitor because the readings I get is just symbols and weird characters.
like this.

This is almost always due to a baud rate (communications rate) mismatch between the sender (your device and code) and the receiver (Arduino application or other serial monitoring tool). You set the baud rate in your device code when you initialize the serial port there. On your computer, it's the drop down at the bottom of the window you're looking at. If they're both at 9600, I'm not sure what else it might be.