In person is always a good way of connecting with or meeting others in your profession. Word of mouth is a beneficial way to meet up with potential employers. Always take the time to speak to others in your professional field. It is always beneficial to hear the thoughts and opinions of those who pretty much walk in your shoes each and every day. It is a general rule of thumb that the more people you know the better!
Using technology is another good choice in professional networking. Some website options for networking are Google, Facebook, and LinkedIn. It is probably a good idea to utilize more than one of these options if you can. An important fact to remember is you are connecting with professional in your field and it is imperative that you keep your professional and social network as two separate entities. You know the old adage, "don't mix business with pleasure"....it is very true in this sense so be careful of what you hear on your professional site.