Phishing is when an attacker attempts to fool you into clicking on a malicious link or opening an attachment in an email. Be suspicious of any email or online message that creates a sense of urgency, has bad spelling or addresses you as "Dear Customer."
To learn more, check out this OUCH! newsletter: http://securingthehuman.sans.org/newsletters/ouch/issues/OUCH-201512_en.pdf
More cybersecurity education available here: https://www.youtube.com/playlist?list=PLQNZaWpmI1TfMOQMJ-ra1VSGgkuOPtFlA