Some very good sites to learn online courses:

1. https://www.coursera.org/
2. https://www.edx.org/
3. http://nptel.ac.in/
4. 
   

Good sites to learn coding:

1. http://www.codechef.com/
2. https://www.hackerrank.com/

Good sites to prepare for interview questions/ problem solving/ coding tests:

1. http://www.geeksforgeeks.org/
2. http://www.careercup.com/
3. http://www.indiabix.com/
4. Special mention of a book "Data Structures & Algorithms" by Narasimha Karumanchi
   

A round of questions with Subhash Khot - The Hindu

A round of questions with Subhash Khot - The Hindu

Useful Links for Computer Engineering Students (Linux)

The above links are mainly for people interested in Linux OS level programming.

• Tutorial on ptrace()   
• http://www.linuxjournal.com/article/6100
• Linux Internal Concepts    
• http://www.win.tue.nl/~aeb/linux/lk/lk.html
• Write own OS   
• http://joelgompert.com/OS/TableOfContents.htm
• Write own debugger  
• http://eli.thegreenplace.net/2011/01/23/how-debuggers-work-part-1/

Linux Shell Scripting beginners article:

• http://www.kau.edu.sa/Files/830/Files/60761_Linux.pdf

BIOS Programming

http://ece.wpi.edu/~wrm/Courses/EE3803/Labs/roehrl.html

Software Version Control System Git documentation link:
http://git-scm.com/book/en/v2/