Quests not doing it for you early on? Head to Laedis, Arteicia and go to the path of elders. Going to any of the sky islands (apparently the desert ones have more) and heading to the napolite mine you will be able to gather napolite and quickly gain lots of experience. This is good till around level 20 maybe? Keep in mind the napolite mine on any island is a pvp zone. Be nice!
Here I have a picture showcasing the mine on Baerton Dusklight with the ore in front of me. On the minimap to the right you can see the spawns on it, gather them all. They respawn fairly quickly.
Road quests are another way to level but what's above is easier in my opinion. For road quests the first one in Puretia is located just past Consus Cave before Paeon Farm, and the next one isn't until the road in front of Samoor Waterbridge which is a higher level area if you are level 5. Napolite is faster to achieve quick levels with.
Disclaimer: This is a day one guide sorry if it becomes outdated!