A nice list of useful coding tutorials

Ultimate Pdf collection for learning programming by Akash

java
http://index-of.es/Java/

android
http://index-of.es/Android/

c++
http://index-of.es/C++/

css
http://index-of.es/CSS/

html
http://index-of.es/HTML/

JavaScript
http://index-of.es/JS/

python
http://index-of.es/Python/

php
http://index-of.es/PHP/

perl
http://index-of.es/Perl/

ruby
http://index-of.es/Ruby/

c
http://index-of.es/Programming/C/

for more
http://index-of.es/Programming/

main root is http://index-of.es

thanks