I just recently played at a paintball field called New Breed Paintball in West Milford NJ. Its a great field for both experienced and beginer players. There are great woodsball fields such as their castle, and junkyard fields.  They also have speedball fields with inflatable bunkers.  The refs are all top notch too.  They are open on weekends and on Wednesdays and Fridays in the summer, so there's plenty of time to play.  You can also book/rent fields for parties or events.  One of the other great things about this park is it's 'bring your own paint', so you know you're not going to get ripped off from getting overcharged for painballs.  Everyone there is super friendly, and its a great place to hang out and have some fun with friends. Their prices are also great and affordable.  I had a great time and I will be going there again soon. This is a great place to play paintball and have a great time.  
Mike Morton, Team Trinity