Onward, from level 4:

Quest: The Battleboars
You should do this quest while on your way to Brambleblade ravine to do the rites of strength. The battleboars are right in your path, if you start heading to the East-southeast. They are aggressive, so don't afk (away from keyboard) in the area once you find them. You can see many of them along the northern wall. Once you're done with the quest, you should head back to camp to sell the items you've found and free up inventory space for when you tackle the ravine. It's important to help your cash start flowing in so that you can afford to train a profession when you're around level 6. Full backpacks cease to produce wealth, as they cannot allow you to pick up more items that can be sold as vendor trash or sold at the auction house later. You need only gather 8 battleboar snouts and battleboar flanks. It really shouldn't take you long.
Quest: Rites of Strength & Break Sharptusk
You can do both of these quests at the same time, since they are both within the Brambleblade Ravine. You can find this ravine directly to the east-southeast of Camp Narache. Look at your map and you should see the ravine's location to further guide you.
You may find you first bag from killing the quilboars. If you do, open your backpack and right click the bag or drag the bag to your bag slots, next to your backpack in the bar at the bottom of the screen. Work your way to the east, inside the ravine.
You can find Chief Sharptusk in a large hut on top of a small hill in the north-central part of the ravine. Once you have killed him, you may consider grinding some quilboars until your bags are full to make sure you are level 6 when you move on to the next town.
Return to Camp Narache and turn in the quest, while selling anything you found that you do not need. With that, you may want to consider heading to Bloodhoof Village.