The best way to network at events is through how you present yourself. Dress up, be confident and in general act friendly and inviting. Having a business card with you , even with your personal contact information like ph#, email and other relevant information can really help. Also, I suggest, you should create a small script on how to introduce yourself, your interests and your objectives you want to get out of the events. Mostly, being social, asking the right questions and presenting yourself as interested and engaged helps alot! Good luck networking..