OK I RAN MY FRIENDS SCANNER TODAY AND THERE WERE 10 CODES

1.P0141 O2 SENSOR HEATER CURCUIT MALFUNCTION (BANK 1 SENSOR 2)
2.P0301 CYLINDER 1 MISFIRE
3.P0302 CYLINDER 2 MISFIRE
4.P0303 CYLINDER 3 MISFIRE
5.P0304 CYLINDER 4 MISFIRE
6.P0305 CYLINDER 5 MISFIRE
7.P0306 CYLINDER 6 MISFIRE
8.P0219 ENGINE OVERSPEED CONDITION
9.P0360 IGNITION COIL J PRIMARY/SECONDARY CURCUIT MALFUNCTION
10.P1399PD MANUFACTURER CONTRL IGNITION SYSTEM OR MISFIRE

CAN YOU GUYS TELL ME WHAT I NEED TO DO TO FIX ALL THESE PROBLEMS/
WHAT SHOULD I BUY?
LET ME KNOW STEP BY STEP THANKS