SomOrg.in is a website for tutorials based on linux & php. you can find here ubuntu installation to hard drive. xampp installation in linux(ubuntu) ,some useful basic linux commands for now.
Also in this website you will find php registration code using prepared statement,image upload script, data listing using datatable etc.
And some basic mysql query in detail.You can find both syntax and example of sql commands.
In miscellaneous section i have covered some usefull topic in Python and Ethical Hacking.