Go to the indicated location to find the corresponding companion to join your party. There are a total of nine companions that can join your party, not including your character. Each companion has unique skills and stories, as well as their own romantic interactions and side-quests. All companions except for Cassandra, Solas, and Varric are optional.
Sera
When entering Val Royeaux, the capitol of Orlais, there will be a glowing red arrow near your character. Find all the arrow messages around the city to meet Sera. Note: You must complete the "A Friend Of Red Jenny" quest before you can recruit Sera.
Lady Vivienne
When you reach the opening courtyard in Val Royeaux, look for a messenger near the fountain on your way out of the city to get the "Ghislain Estate" quest. He will give you an invitation to meet with Lady Vivienne at her estate.
Iron Bull
Go to the gate doors outside the Chantry in Haven. Wait until a messenger appears and invites you to the Storm Coast. Note: You must complete "The Captain Of The Chargers" quest in the Storm Coast before you can recruit Iron Bull.
Blackwall
After Leliana gives you "The Lone Warden" quest, you can find him in the Hinterlands area.
Dorian
After Fiona requests for the Herald to meet with a faction of Mages, you can find Dorian in Redcliffe.
Cole
Later in the story, Cole will appears in Haven. He cannot be missed or acquired early.
Cassandra
Acquired at the start of the game. Cassandra joins the story with Varric and Solas as your first party members.
Varric
Acquired at the start of the game. Varric joins the story with Cassandra and Solas as your first party members.
Solas
Acquired at the start of the game. Solas joins the story with Cassandra and Varric as your first party members.
Easy Climbing
As you are exploring and have to climb along steep terrain, watch your trekking companions. Because they are controlled by AI, they will often have an easier time climbing. If an ally works his or her way to an advantageous position, quickly switch to that character, and then back to your preferred warrior. You should join your friend on the high ground, saving you the trouble of getting there the hard way.
Easy Wyvern Scales and Experience
Once you are at level 13 or higher with sufficiently powerful gear, head to the Hissing Wastes. Work your way to the oasis, located near the far west side of the map. Kill the enemies you find there and gather the wyvern scales, which you can sell for around 4000G for about 10 minutes' worth of work. It's a great way to gain both gold and experience points.
Getting a free horse
Once you reach the Hinterlands zone, travel to the far western corner to investigate the "Master Of Horses" side-quest. It is west of the Redcliffe Farms Camp. You can see the large stables from a distance. Travel up the hill to the large homestead, talk to Master Dennet, and agree to his terms to get a free Ferelden Forder. You can collect the horse with the saddles in the stables to the right of the path as you exit the house.
Getting the War Nug mount
Travel to Val Royeaux, and look for a vendor named Deraboam in a small store with a blue door. Interact with the chest to find "The Mystery Box" unique item, which costs 10,000 coin. Buy it to unlock "The Big One?" mission on the global war board. Then, send one of your advisors to complete "The Big One?" mission, and they will return with the giant War Nug mount.
Infinite Gold
From the War Table, select the Gather Coin operation with any character. Now, exit the game long enough to change the clock settings on your hardware. Set the time forward an hour, then resume play. Your operation should have concluded, and you can collect the rewards. Make sure not to rollover your time, and it's a good idea to reset your clock once you have used the trick a few times, just to keep things simple.
Item Duplication
You can dupe stackable crafting materials at any merchant. All you need to do is mark your crafting materials you want to dupe to the Valuables and hit Sell and Sell All at the same time. Only stackable crafting materials can be duped and no herbs.
Max Power and Influence
To quickly max out Power and Influence in Dragon Age Inquisition, do the following: You must first reach Skyhold. Go to the merchant in the Southwest corner of the courtyard (Farris the Representative). Click on Buy/Sell and go to the Other section Purchase whichever of the Influence/Power items that you can afford. DO NOT exit the merchant at this point. Immediately go to Sell and sell the item back to the merchant. Repeat as desired. When you exit the merchant Buy/Sell screen, you will get the accumulated Influence/Power from your "purchases."
Unlimited Amulets of Power for your Inquisitor
To make use of this glitch you must have reached Skyhold and unlocked Crestwood on your map table. Travel to Crestwood and locate the village. There is a boarded up and locked house there.
To gain access to it you must:
1) Drain the lake and close the fade rift there
2) Have the Deft Hands perk.
After entering this house you will find a bag of loot on the floor along with a chest off to the side. Selectively loot the bag. It will have an "amulet of power" for your inquisitor in it along with atleast one other item. Take the "amulet of power" and leave atleast one item in the bag. This can be done with the chest off to the side as well. Now you exit Crestwood then return. There is a quick travel point in the village so you don't need to travel far after returning. Go back into the house and selectively loot the bag and chest again. the "amulet of power" has respawned and there are new items in the chest.