okay, this has been covered, but i understand the new searchbar makes it impossible to search
first off, don't be overly gentle, it's very hard to break any of this shit
1. grab the top of the frame where the O is and pull it up, it'll come away from the lens
2. grab the lens that is now free of the frame and pull it out and up and it'll come out very easily
3. take the new lens and line up the nose piece first and click that in
4. work both sides out from the nose piece until they are clicked and the whole bottom is in and the lens sort of sticks out at an angle
5. tuck each side of the lens into the curve of the frame so that the only part not connected is the top of the lens
6. pull the frame up and push the top in and get everything clicked down
7. go around and make sure everything is in
8. ?????
9. profit