We recommend the American Numismatic Association's link page, which can be found at their homepage, www.money.org. It contains many useful links to a wide range of excellent numismatic sites.
You may also consider becoming a member of the Garden State Numismatic Association (GSNA). They have periodic meetings and an annual coin show, including exhibits. This major NJ show will next be held in May 2020 in Somerset, NJ. Check back here for the exact dates and for more detailed information, or contact them at www.gsna.org.
If you are interested in World Currency, many countries have changed to polymer notes. Additional information with great photos is available at www.polymernotes.org.