Organizations
The Associated Press Stylebook, also known as the journalist's Bible, is the most important resource for media professionals. The book is available in both print or virtual for around $35. It is well worth the money and can be used for years. Check it out at apstylebook.com.
ACES, The Society for Editing has many useful tips and opportunities for media professionals. Student memberships are available for $40. Visit their website at aceseditors.org.
Memberships in professional and student organizations are a great way to get access to programs, workshops and career opportunities. Consider joing The Society for Professional Journalists. Student meberships for SPJ are $37.50. Visit their website at spj.org.