Starters Summary
You're new to Waze map editting and like to help. This page lists the possibilities for a starting map editor (level 1). But - very important - please read first the Quick start guide and keep the KISS principles in mind, otherwise you could end up by other editors correcting your work.
Beginners are not allowed to do all changes, more important roads and other map elements are locked on certain levels to proterct the map for unwanted changes. More on locks, see the Locks page.
Points of interest
Add a Place, but keep in mind that the first 10 submitted place proposals need to be confirmed by another editor. If you're waiting for approval you can submit your request in one of the editing channels of Slack.
Update the details of already existing places. For instance add the website, telephone number, opening hours. Depending on the place catagory more or less details can be filled in.
But linking a place to a Google place isn't allowed yet.
Roads
If there are in your neighboorhood new developments, new houses build on new streets. You could make a start with mapping.