The picture did show.* Not sure what type of germination you would get if the pepper isn't fully ripe as the seeds may not be fully mature.* I found this info on hot pepper seed saving that would apply to sweet peppers too.
See #7 here.
Most green bell peppers will ripen to red.* They are picked green and are not mature.* They need to ripen on the plant.
When weeding, the best way to make sure you are removing a weed and not a valuable plant is to pull on it. If it comes out of the ground easily, it is a valuable plant.