I did some research and it said just shoot some rocks in an SRV on a planet to get it. Well that's what I've done except shooting rocks does nothing. They don't explode or crack open or anything. How do I get Nickel, please? Also, I find myself stuck in the turret of my SRV. I'm playing on the PC, could somebody tell me how I get back to the SRV cockpit, please?
"Some" research. Nickel is reasonably common but shooting random rocks just does not cut it. Use
https://eddb.io/body to find nearby planets with a high percentage of the ore you want to collect. As noted you need to learn how to use the SRV Wave Scanner to find the rocks that release collectible materials
when targeted and blown up using the SRV's repeaters. Once the carbonaceous chondrite, mesosiderite, outcrop or metallic meteorite has been blown into little chunks, deploy the SRV Cargo Scoop,
target a chunk of material on the ground and run over it to collect it. In low gravity a falling chunk landing on/near the front of the SRV will usually collect it. Keep targeting different chunks on the ground and running over them (
with the cargo scoop deployed) until they are all collected and then move on.
Collect every material. It will all be needed and if the SRV picked it up, at some point you will need it.
Check your key/button bindings in the game control bindings, there is a SRV turret toggle , don't remember what the default is because I use a HOTAS and Voice Attack.