Windshield wiper removal?
they fit onto a u shape. to remove there may be something to depress as you slide it off the u. to replace slide wiper onto the u until it locks into place. its kinda pain. once you see what i mean and do it you will never forget.
take a flat screwdriver push in on spring and remove wiper blade, to install just push back on
Look for a tab or button on the wiper, push it in and pull up on the wiper. They can a pain if you cant figure it out take your new blades back then go to Advanced Auto you buy they install.