If your car isn't starting and your battery isn't dead there is 3 main things to look out for...
1: check for spark
2: check for fuel supply
3: check compression
If you find all 3 of these things are fine, then start checking to make sure sensors are plugged in and not faulty, for eg throttle position sensor. If compression is fine but there is no fuel or spark, check CAS. If you are in Sydney and need assistance, drop me a pm and I'll give you a hand!