The tradeskills are one of the main aspects of the game. There are six tradeskills in the game, which produce a variety of resources. It will be one of the primary income sources and you should therefore try to have your action bar in the top running as much as you can.
Resource Tradeskills Edit
Each of the 4 gathering type trade skills allow you to gather resources that can be used for expedition specific boosts, or be sold on the market.
Gathering rewards plants per attempt.
Mining rewards ore per attempt.
Fishing rewards fish per attempt.
Woodcutting rewards wood per attempt.
The Scouting trade skill is a very useful skill in MQO. It's the only skill that gives you currency "Relics" that can be invested right back into trade skills. As a new player this can be preferable so that you never have to bother selling things on the market, and you can simply invest what you find back into your account.
Scouting perks. Edit
Scouting also gives a few map perks. A list of them can you see here:
Level 0 - 43 tiles view range
Level 5 - Ability to see Monsters lvl 11-50 on the map
Level 10 - 73 tiles view range
Level 20 - Ability to see T1 resources on the map
Level 25 - 121 tiles view range
Level 40 - Ability to see Monsters lvl 51-100 on the map
Level 65 - Shows the tile level and % to next level
Level 75 - Ability to see T2 resources on the map
Level 100 - 181 tiles view range
Level 110 - Ability to see Monster lvl 101-250 on the map
Level 125 - Ability to see T3 resources on the map
Level 175 - Monsters 251-1000 on the map
Level 200 - 253 tiles view range and the ability to see T4 resources on the map
Level 300 - Ability to see Monsters lvl 1000+ on the map
Level 400 - Ability to see T5 resources on the map
The Selling trade skill is one that simply yields gold per attempt, as in, you don't actually sell anything, yet you receive gold per attempt. On the surface it sounds great, however due to tier setup, it can be extremely ineffective as a form of early progression or money making. This is definitely advised as a skill that can be used later on in your account. One unique benefit of selling is that you can receive a reduction on your market taxes. Market taxes are 10%, and every selling level it falls by .01%, this stops at level 500, where you would then have a 5% market tax.