This article contains a collection of Google Search Console (formerly Webmaster Tools) resources that are essential for your work, along with links to the most useful 3rd-party tutorials.
Google Search Console [Login]
This is where you enter Google Search Console.
Search Console Help
The official home of Google Search Console support. At several thousands of pages long, this resource is very detailed and should be your starting point anytime you have a question about the tool and how it works. Only when you cannot find a satisfactory answer to your question, you should consider proceeding to look for answers elsewhere.
Official Google Webmaster Central Blog
On this blog, Google publishes all official announcements and tips on how to connect your website or app with Google Search and Search Console (Webmaster Tools).
Webmaster Central Help Forum
When you fail to find an answer to your question in the Help section above, you can try the official webmaster forums. While not an official support, these forums are frequented by Google employees and active/knowledgeable members of the community alike. Most questions are answered within minutes or hours. A very valuable resource.
Google Webmasters Google+
Contains announcements, tips, and resources to make your site useful to visitors and easy to find in Google Search. You can also sign up here to attend office hours for webmasters on Hangouts, where you can ask anything webmaster related like crawling, indexing, mobile sites, internationalization, duplicate content, Sitemaps, Search Console, pagination, duplicate content, multi-lingual/multi-regional sites, etc.
Google Webmasters YouTube Channel
This YouTube channel contains all Google Webmaster videos, mostly consisting of office hours recordings (see above) and help videos. Pretty useful, overall.
A Beginner’s Guide to Google Search Console
Published in September 2015, this article, written by Angela Petteys, contains a detailed description of the most basic tasks you need to undertake in order to begin taking advantage of Google Search Console: adding and verifying a website. It also talks about connecting Search Console data with Google Analytics and walks you through some basic features, such as adding a sitemap, checking a robots.txt file, submitting URLs to Google index and viewing site errors.
Search Engine Land: Search Console
Search Engine Land has an entire category devoted to Google Search Console and you can count on fresh news anytime there is a change. Also, they have contributors writing articles on various aspects of Search Console, so, overall, this is a pretty useful resource.
How To Add Your Website To Google Search Console
Yoast, the creator of the brilliant Yoast SEO WordPress plugin, has probably the most detailed article on how to add your site to Search Console. Considering this is one of the most frequently asked question, the article is bound to be quite useful to many webmasters.
The Ultimate Guide to Using Google Search Console as a Powerful SEO Tool
Written by Neil Patel, this article is going through practically every feature of Google Search Console. If you need a full overview, this is the article to read.
Everything You Need to Know About Google Search Console
Another detailed article from a respected source that walks you through all the steps of setting up Google Search Console. It also talks about how to use it and covers all the important features.