The Control Consoles (CC's for short) are not hidden. There are certain types of bases-Amp Stations, Bio Laboratories, Tech Plants, etc.- Now, each type of base always has the same layout. So once you've gone through a few times in a certain type of base, then you'll know where the CC is, because it doesn't move.
No hacking cert allows you to hack bases and towers, but very slowly.
Hacking cert allows you to hack equipment terminals, lockers, vpads, and hack faster (doors, CC's, etc.)
Advanced Hacking cert allows you to hack enemy vehicles and hack everything mentioned above, faster.
If you hack a vehicle, you CANNOT enter the said vehicle unless you have a certification, but the main point would be to hack an enemy vehicle and deconstruct it so they cannot use it.
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