I've had my share of those in the past, I try and leave it to heal on it's own but if it's really painful and I have to be somewhere I pop it with an extractor and ice it if I can. I'd definitely try to avoid popping it, and if you do use a proper tool if you can. Maybe a warm compress could gently make it pop on it's own.

I would gently Pole it with a needle and release some of that puss and then leave it alone. Definitely wash it and maybe out some bp cream on it to dry it out. Ice in a bad works wonders too. If it's painful you could take ibuprofen for the Inflamation and pain. Cheers