Oct. 14 is the last day to register to vote in Our Fair State for this year's election. The Division of Elections has a lovely new website with links to each county's clerk and forms to get you started.
You can apply for an absentee ballot in writing until seven days before the election (and in person until 3 P.M. the day before!) You can get an absentee ballot here.
New Jersey's FAQ for elections is here. If you need info about the election, try NJ Voter Info.