One question though: i also found some rock/mineral ( 'igneous' or something ) and i was able to successfully Cargo-scoop it up into my SRV , but then i can't seem to figure out where that rock/resource is now stored?
Those rocks, or "raw materials" are stored in the magical storage space that moves with you from ship to ship and SRV. Open the right panel, scroll across to Inventory, you will see a number of tabs down the side, those take you to the magical storage spaces that move with you and contain things like "raw materials," :manufactured materials," and "encoded materials" needed for engineering, as well as access to other functions like synthesis.