Recombining greens (Masterwork items) to make yellowes (Rare items) is done through the Mystic Forge. In the Mystic Forge, you can throw 4 items (say, 4 green weapons) and then hit OK. The Mystic Forge will get you 1 new weapon that has 80% to be green and 20% to be yellow. You can also do this with 4 yellows to make an orange item (Exotic item). It is also used with loads of other stuff. For example, if you put 4 dyes in them (say, red, blue, yellow and green) you get 1 dye back that has a small chance to be of a higher quality than the ones you threw in.
I personally do not combine greens into yellows myself, I prefer breaking down greens and blues because they give you materials for crafting and “luck”. You can consume luck to make your account Magic Find higher. Or, if the blues/greens are worth relatively much, say 1.5 silver+ I sell them on the trading post.
You can make money by running dungeons. Story dungeons give 50 silver upon completion and drops and Explorable dungeons (these are a little harder) give a minimum of 1 gold (the easier dungeons) and a maximum of 3 gold (the harder dungeons) upon completion and drops. The guide is probably telling you to run CoF over and over as it’s the easiest dungeon in the game and a while ago it would give you the most money for your time. However, this has been nerfed now to that you can only get that gold once a day per account, so it’s mort worthwhile to do different dungeons.
You can also do “champ farms”. Go to Frostgorge, Cursed Shore or Queensdale and ask in map chat where the “champ train” is. This is a group of players routinely killing different champion mobs on the map. Each champoin gives a pouch or bag, that you can open to get silvers, crafting materials and blues/greens/yellows/exotics.
The LGF tool is actually pretty well used. Just click the dungeon you want to join, and if you don’t see a party pending make your own. It will fill up within seconds (CoF is filled up within seconds) to a few minutes. It’s really fast and easy.
