New users are those users who may be new to the Stack Exchange Q&A format, and generally have a low reputation score, which starts from 1 at the time of registration.
For questions and discussion regarding new users on the site. That is generally taken to be users with a reputation below 10.
Getting started as a new user can be hard, and possibly even frustrating. Here are some effective approaches to get you going, preferably also in the order specified: