Get some practice in before venturing in to multiplayer survival!
Play against the Sentinels in single player training mode and get used to how guns and vehicles work. Gun Vendors and Street Arms are both active in this mode so get to the vendor with your cash or take your chances with random guns from Street Arms.
All of these features are in the current builds of Linx in Single and Multiplayer modes.
More maps will be added in the coming days to Training Mode.