To find the Wind Strider the player must first go to Blackreach. Once in Blackreach head towards the center of the map and you will eventually see Blackreach City. You can tell the city apart from the other structures by the large orange sphere hanging in the middle (as seen in the pictures). Once in the city look for a large rock sphire, at the base of this spire is a door that takes you to an elevator to the top of the spire. Kill the boss and then search the skeleton's satchel for his field notes. Long story short, the player need a 'Dragon Stone' to power the airship. The campsite with the Dragon Stone is to the left of Raldbthar (check images). Once the player has the Dragon Stone, return to the airship and click on the engine. The airship will come to life and is yours to use as you wish. Enjoy :)