Multiple things at once

Ok, this is probably too much but i am brand new to Arduino and i really need lots of help.I want to figure out how to start a sketch running by using a left and a right PIR sensor.(the reason is to have one of my servos move to the left or right after the sketch starts.As the PIR is detected, i want to move 3 servos at different intervals and then play an mp3 sound to match one of the servos.At the same time the PIR detects motion and moves the servos, i want an led to fade up and then fade down after the mp3 is done playing.The total time of the MP3 is 17 seconds.I have a fade sketch for the LED and it seems to be working but that is about it.
Anyone want to help me??
I could really use it.

There are at least four systems you need to work on, I'd suggest one at a time and then combine them.
Not necessarily in order, learning about the iDE, using libraries, dimming LEDs, reading PIR and providing output, driving servos and using blink without delay for your timers.
Many tutorials and how to's out there...... Jeremy Blum is just one on youtube.

If a ESP32 is being used, the built in OS, freeRTOS, is a multi-tasking multi-processing OS.