Market Tip for New Players
Most of the low level items you can find in the market are also available for sale on NPC merchants or you can make it yourself.
I mention this because I was selling a lot of jewelry on the markets before I was aware of this, at prices much higher than the NPC merchants, and people were buying them like hotcakes. Once I found out, I reduced prices to the NPC price.
Someone pointed out that markets do provide one stop shopping and is much easier to identify upgrades, so perhaps a premium was reasonable. This is true - I find it much easier to go to the market and identify upgrades than go through my armory or recipes. And can often find good deals that are cheaper than I can make it, much less buy the item from an NPC. But I just wanted to mention this so newbies aren't ripped off because of lack of knowledge.