Equipment selection is dependent upon personal preference and intended usage. The monk's primary attack attribute is Dexterity.
Relevant information can be found in this question, but essentially each stat has a use outside of damage calculation:
- Dextertity = Dodge
- Strength = Armor
- Vitality = Health
- Intelliegence = Resistances
Elemental attack stats are useful if you can discern enemy elemental affinity.
Other stats to be concerned about are Money Find and Rare Find which are useful for farming cash or rare equips/components respectively.
Attack rate increases your DPS, but more importantly it decreases the amount of time between attacks which is important for attacks with effects like stunning the enemy for example.
Health for each kill or health from orbs increases will serve to keep you healthy.
XP bonuses from kills will help you level faster.
Spirit regen is useful if you use your abilities a lot.
Movement speed is extremely useful for attacking and exploring and running away.
Straight damage or armor increases are very straightforward to understand and can be compared mostly straight across against primary attack stat and Strength for the most part.
Subjective opinion to follow:
Personally, I don't worry about it too much. I try to boost magic or money find as much as possible in order to find better base stat equipment and/or materials. As far as other stats, my personal preference is to boost Dex because it boosts both attack and evasion. I try to raise my attack whenever possible because if you kill the enemies before they hit you, your defense wasn't really helping. I also like to keep some movement speed boost on because it is extremely useful.
Best Answer
Diablo III has a handful of merchants, but for the most part, they are named for your convenience. Specifically, only merchants known as, "... the Fence" will sell you "Trinkets", which include both amulets and rings. They will show up on your minimap as "Fence".
Act I: Radek the Fence
Radek the Fence is in the Nortwest part of Tristram, on your way towards the Northwest gate.
Act II: Silmak the Fence
Silmak is also chilling in the Northwestern part of the town, though in his case, he's overlooking the city, a little east of the healer.
Act III & IV: Litton the Fence
Litton is hiding in the southmost part of the Worldstone Keep area, where he will sell you the belongings of dead soldiers.