This page explains how to find the Kah Okeo shrine and solve the "Wind Guide" puzzle.
How to Find the Shrine
You may want to have an Octo Balloon in your materials inventory before you look for this shrine. You can get them by killing Octoroks.
Go west from Tena Ko'sah Shrine. Alternatively, go southwest from Tabantha Tower, and proceed south along the west side of Rayne Highlands. West of Rayne Highlands, there is a large, flat rock. Drop an Octo Balloon on it to make it float. Or use Stasis on it and hit it with a weapon to get rid of it. Go into the hole under the rock to find this shrine.
How to Solve the Shrine
Go straight ahead and open the chest that you find there. It contains a Korok Leaf.
Equip the leaf and stand near the bars. Use the leaf in the direction of the windmill. When it spins, the bars open. Quickly go through before the windmill stops spinning, because the bars will close.
Don't pick up the barrel, or the balloons will come off. Use the Korok Leaf to push the barrel along the hallway. You can use the barrel in the next room to hit the Guardian Scouts down below.
If you go down to fight the Guardian Scouts, you can get back up by climbing the ladder on the pillar in the middle of the room.
Go up the ramp in the next room and use the Korok Leaf on the windmill to make a floating platform appear. Stand on it and use the Korok Leaf to blow the platform back the way you came. There is a hidden chest in the corner of this area that contains a gold rupee. Then use the Korok Leaf to push the platform over to the ledge on the other side of the room.
Go to the next area from there. You will encounter a Guardian Scout. You can throw a bomb at the cracked block in the wall to detonate the bomb barrels and do some damage to the Guardian Scout.
After you get past the scout and the cracked block in the wall, stand on the platform in front of the windmill, and use the Korok Leaf on it to be launched upward. Float to the platform with the treasure chest. Open it to get a Forest Dweller's Sword.
Then float to the area with the ladders, and climb up. Use a bomb on the cracked block at the top, then float in the updraft.
At the top, use the Korok Leaf on the windmill to make a floating platform appear. Stand on it and use the Korok Leaf to go to the treasure chest. It contains a Giant Ancient Core.
Then get back on the platform and carefully use the Korok Leaf to go through the spike maze. At the end, stand next to the windmill and use the Korok Leaf on it to be launched upward.
If you have Bomb Arrows, you can shoot one at the column of cracked blocks to break them. If you are having trouble with it, just activate the windmill nearby to be launched upward so you can shoot the arrow in slow motion.
Otherwise, go into the room on the side and activate the windmill to make a floating bomb barrel appear. Use the Korok Leaf to push it into the large room, then use the Korok Leaf to make it go over to the large column of cracked blocks. Try to get the barrel to hit one of the torches around the blocks. If you can get the barrel to burn, it will explode, breaking the blocks.
Float in the updraft revealed by bombing the cracked blocks, then open the chest at the top to get a small key. From here, float to the high platform in the wall in the corner, then float down from there to the treasure chest on the ledge. Open it to get a Thunderspear.
Then float down to the locked door and open it with your small key, then go in and talk to Kah Okeo to get the Spirit Orb.