I don't know if popping your pimples is really that bad. Everytime I get a acne facial they extract my pimples after the peel. Last time I had a visit with the dermatologist for a follow up she was really happy with my progress, and she extracted some pimples I had on my face. So I'm starting to think its not a bad thing.
The correct way to pop pimples is to make sure that they're actually ready to come out, a lot of people force pimples out resulting in damaged skin. Also, cleansing the face and adding a warm compress to the area will make extractions much easier.