how i can add social media buttons (facebook, pinterest, thumblr) on each image of wordpress articles
for example check this site article page,
i want to apply on my website toptensthings.com
You can give this a shot. Apply relative position to the image, but also set the "image" (social buttons) as either a) one image, or b) create a box, style it, and use absolute positioning to add the 'box" inside the div/span that contains the image. Meaning put the social media button onto the image through absolute positioning within a relative positioned image. You will need CSS and/or JS depending on how you want to archetype it.