ABCya.com is the leader in free educational kids computer games and activities for elementary students to learn on the web. Grade level lessons incorporate areas such as math and language arts while introducing basic computer skills. Many of the kindergarten and first grade activities are equipped with sound to enhance understanding.
Grade Suitability: 
Grade K,1,2,3,4,5  
Grade Suitability: 
Grade K,1,2,3,4,5   
Grade Suitability:  Beginner to advanced. Great for teachers who teach more than one child and would like to track progress. 

Resource: Typing Web is a free online typing tutor & keyboarding tutorial for typists of all skill levels. It includes entertaining typing games, typing tests, and free official typing certification. It is used in nearly every large school district in the US, and by thousands of teachers and millions of students worldwide.
Grade Suitability:  Beginner to Advanced
Online lessons in Word, Excel, Powerpoint, Access and Publisher. Revision activities and games. Developed by Mr AJ Field.  
Grade Suitability: 
Grade 7,8,9
Grade Suitability: Grade 10,11,12

Resource: ICT for IGCSE 
Online lessons in:
Hardware and software; data; networks, systems and components; modelling and control, applications, past exam papers and answers.
Grade Suitability: Grade 10,11,12

Resource:  ICT Specifics.
Online lessons in:
Dreamweaver, Fireworks, Flash, website creation
Grade Suitability: 
Grade 10,11,12, AE

Resource: Google Adwords
Online course . Free certification given.
Grade Suitability: 
Grade 10,11,12, AE

Resource: Google Apps Education
Online course
Free certification given. 
Grade Suitability: 
Grade 10,11,12, AE

Resource: Google analytics
Online course
Free certification given.  
Grade Suitability: 
Grade 10,11,12, AE

Resource: History of the Internet. Copyright by Dave Kristula. View his site for other online free tutorials in Html, web design, etc 
Grade Suitability: 
Grade 7,8,9,10,11,12, AE

Resource: Learn basic coding with the option to upgrade to the paid service for more in-depth training.
Grade Suitability: 
Grade 9,10,11,12, 

Resource: A technology platform for teenagers to explore. Robotics, gaming, music, graphic design, business venture -  learn how to build a Facebook app, make and post a movie to you Tube, make a game and much more.
Grade Suitability: 
Grade (Beginner) 3,4,5,6,7,8,9,10,11,12, 

Resource: A coding and technology platform for kids from MIT in which kids can can program their own interactive stories, games, and animations and learn how to think creatively, reason systematically, and work collaboratively.
Grade Suitability: Grade 7,8,9,10,11,12, Adult Education, but grade suitability does depend on prior knowledge, meaning that perhaps younger children could work on this site, but the interface is more oriented for older learners.

Resource: 
Learn Javascript, PHP, JQuery, Python, Ruby, HTML and CSS as well as various other web coding fundamentals.
Grade Suitability: Grade 9,10,11,12, Adult Education. A free course offered by Stanford University. You receive a signed certificate of completion when the course is completed if you join the class when it is run, but no certificate if you choose the self study option. Both options are free.

Resource: Basic computer science course offered by Stanford University. "...teaches the essential ideas of Computer Science for a zero-prior experience audience.  The course uses small coding experiments in the browser to play with the nature of computers. Workload: 3-5 hours/week
Grade suitability: For beginners of any age

Resource: 59 free lessons on Javascript.
Grade Suitability: For beginners through to advanced users.

Resource:  Free courses on HTML / CSS, Javascript, SQL, PHP, ASP, ADO, XML and numerous other programming languages and web development tools, as well as an invaluable reference resource for coding.
Grade Suitability: K,1,2,3,4,5,6,7,8

Resource: Lessons, lesson plans and activities on how a computer works, parts of a computer etc