How to look at stereoscopic images
Cross-eye view: These types are much easier to view in my opinion - I never fully mastered the parallel view myself, the cross-eye ones are much easier to focus on. What you do is you just cross your eyes like when you try to stare at the tip of your nose, until the images combine in the middle as a 3rd image, then focus your view on the middle image until you see it clearly.
Cross-eye view:











