Field Guide/Safe Zones
The Safe Zones have additional features beyond completing your first Quest. They have the most Traders gathered together, and are where you can find special Traders during holiday events. They also let you change your appearance at the Barber and update your Survivor's License photo ID.
Although they don't allow you to initiate violence, they won't protect you from being chased by wild animals/etc. An angry bear is still an angry bear.
Keep checking the notice boards for Quests and Bounties that will eventually let you engage with the community on a deeper Level.
Safe Zones have 'No Build' areas around them to deter Survivors from using them as ambush/trap zones. You will have to venture away from the Safe Zone borders if you want to set up lures or activate Horde Beacons.
Although your initial location (and Respawn point) is mostly random, you will Likely end up closer to the Longdown Valley Safe Zone in the early stages of development. As the game gets closer to Launch, this may change...
Safe Zone Traders
All Safe Zones have several Traders you can sell off your salvaged goods and (hopefully) upgrade your equipment.
Weapons Trader - Not the only place to buy guns, but typically one of the better ones.
Junk Trader - An assortment of accessories and gear. In the Post Apocalypse, one Survivor's junk really can be another one's treasure.
Equipment Trader - Every Survivor needs more and better ways to carry their gear, and this Trader has what you need...most of the time.
Book Trader - Skill upgrades! If your have the cash, you can get a leg up on your Skills and even Levels by studying hard. Some books give straight up XP, while others give a multiplier until you level up that skill, so make sure you don't waste them.
Longdown Safe Zone
Nestled among the few remaining sanctuaries, this haven provides a secure night's rest under a watchful gaze. Surprisingly spared from local bandits and COYOTE assaults, it draws friendly scavengers in search of essential items from the various traders. The Safe Zone provides an opportune location to unload surplus gear amassed during your travels. During your visit be sure to offer a pat to the loyal canine stationed on the porch before bidding your farewell.
Note: So far this Safe Zone has the most resources in one location, which is surprising given the amount of Zed activity nearby.
Crashed Ship Safe Zone
Although the Ship is no longer seaworthy, the crashed vessel now serves as a haven for weary travelers seeking refuge to exchange goods and the chance to socialize with fellow survivors. in this safe space, you can let your guard down and temporarily relieve the burdens of the harsh journey. Rest assured, it provides a respite for the time being, offering a unique opportunity for comradery and the exchange of much-needed supplies.