click on the poses tab
there are pictures, but it is beneficial to read the instructions to be sure you are doing the pose properly. You can injure yourself if you enter into doing yoga without knowing the proper form and movement. You don’t just try to get into a pose that looks like the picture, you have to move your body appropriately to make sure the bones and muscles are in the right position and you don’t strain or injure yourself.
Also it is very important to focus on your breath. Long, slow deep breathing is best for any yoga positions, and you should never hold your breath.
Please take the time to read a bit and learn what you can, yoga really can help with your migraines, but only if done correctly.
good luck 🙂
Refer this site for simple yoga techniques you can do anywhere anytime