Well that's a multimeter that anyone would enjoy having in their tool kit. I have gotten by with ten buck cheapies.
Anyway, your concerns, automotively speaking, are continuity (is there flow?) and voltage (how much power?)
On that meter, you want to push the range button to 20 (cz there's only "12V" on a car), the AC DC button to DC. That's all for settings. The little horseshoe shaped icon is for resistance/continuity. You plug the black wire into the black hole, and the red wire into the hole to the far right. That will give you both voltage and continuity.
Voltage readings will be from zero to whatever.
Resistance/continuity readings are from 1 (no current) to zero (open current)
The V with the little dashes is Direct Current, which is what you have on your vehicle, so put the selector switch on that icon when checking voltage.
The V with the wavy line is for Alternating Current (household)
When checking for continuity, put the selector on the horseshoe shaped icon (readout will change to a "1")
When Checking for voltage put the selector on the V dashes (readout will change to zero)
1966 109 5 door wagon 300Tdi "spermaceti fueled"
1994 RRC LeWiB "ruining the air behind me"
1968 2A 88
All my troubles are Rover