Top ten "GO TO" websites every librarian should know 

The following is a list of resources that I would consider essential to your core list of "go to" websites.
Common Sense Media   
Common Sense supports parents, teachers, and policymakers by providing unbiased information, trusted advice, and innovative tools to help them harness the power of media and technology as a positive force in all kids’ lives. It provides an extensive curriculum around living in an online world including cybersafety and digital citizenship.
Edutopia
 Edutopia is dedicated to transforming K-12 education so that all students can acquire and effectively apply the knowledge, attitudes, and skills necessary to thrive in their studies, careers, and adult lives. Founded by George Lucas in 1991, Edutopia takes a strategic approach to improving K-12 education through two distinct areas of focus: Edutopia and Lucas Education Research.
Cathy Schrock's Guide to Everything
Probably one of the most extensive list of resources related to educational technology available on the web.
​Graphite.org
Graphite is a free platform from Common Sense Education that saves you time by making it easy to discover the best apps, games, and websites for your classroom. With thousands of reviews of tools such as Edmodo, Kahoot, ClassDojo, and LightSail, the community of educators take the guesswork out of finding innovative ways to transform your teaching practice.
Studyvibe
StudyVibe is a rich repository of education and learning resources.
It is designed to support students, parents  and teachers' curriculum development and improve learning outcomes for students in middle and senior schools.
The Research Safari
The Research Safari is designed to help middle school students navigate their way through the 'jungle of information'. It uses the information / inquiry process as a framework to guide students through a research task. 
The Knowledge Compass
Any research or scientific inquiry begins with a problem to solve, or a desire or need to discover new information. The questions you ask will direct your research, so it is important that you ask the RIGHT questions.  The Knowledge Compass is designed to guide students in the development of powerful questions for their research tasks.  There are five question compasses which can be used in a range of contexts. 
TEDEd Lessons Worth Sharing
Educators familiar with inspired ideas presented on the TED website will love this website.. The site features excellent educational videos which can be 'flipped' to create customised lessons that centre on the video. inspired
ReadWriteThink
One of the most popular educational resource sites on the web. Created by Verizon Foundation with 1000s of lesson plans, interactive tools, etc. 
The Literacy Shed
​The Literacy Shed has evolved into three different 'sheds' including the original free website which is home to a wealth of short films and animations and related teaching ideas that support literacy. This is an exceptional website for any English teacher or anyone using film in their class.