Which web/software development conferences a student should attend and why?
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Offer to volunteer at conferences. If accepted, you’ll get in for free and you’ll get to meet loads of people (including spending time with the speakers)—in exchange for a full days work manning desks, finding speakers in time for their talks, giving people directions and generally helping organise and clean things up.
It’s a rare conference that doesn’t need volunteers to help out. Just get in touch with the organisers a month or two in advance and ask if they need any help on the day.