List of top learning services by famous corporations and organisations

1- YouTubeEducation

2- Learning services offered by Google

Google in Education

The "Google in Education: A New & Open World for Learning" booklet provides more information on how Google and its users are impacting education.
google.com/edu/

Google Apps Education Training Center

edutraining.googleapps.com/

3-  Microsoft  office training

office.microsoft.com/en-us/training-FX101782702.aspx

4- Discovery  education

Discovery Education supports teachers in accelerating student achievement, bringing the world of Discovery into classrooms to ignite students' natural curiosity.

discoveryeducation.com/