These guides may need updating but a lot of the information is relevant for a first timer and they will get a lot of value from checking them out.
+Ahmed Zeeshan - The Google+ Starter Pack [Check his about page for more]
+Colby Brown - The Survival Guide for a Photographers Paradise
As well as the aforementioned people (who are always willing to help if they can), you can find a wealth of information about Google+ from the following.
+Christina Trapolino - Plenty of engaging discussion surrounding aspects of the Google+ community.
+Johnathan Chung - A wealth of information relating to the Google+ network.
+Natalie Villalobos - A community manager like no other [Google Employee].
Find People to Circle
+Ardith Goodwin‘s New To Google Plus Helpers
+Jarek Klimek‘s List of Recommended Google+ Photographers
+Colby Brown‘s Photo Critiquing Circle
+Robert Scoble‘s Tech Bloggers and Journalists Circle
Easily Add Multiple People to Your Google+ Circles
Circle+ is a chrome extension that works great on sites like http://www.group.as/ and http://recommendedusers.com/ by adding all the people that it can find on the page to a circle of your choosing. This is much quicker than adding one person at a time. Please use it sparingly as Google+ does limit how many people you can add within a given timeframe.