for online learning it help ful.for gate exam preparation,gate score Search engine website this website is helpful for science education student's learning helpful.

 

www.ureddit.com/ for online learning it help ful.

www.nptel.ac.in/ course.php for gate exam preparation,gate score to get admission to master engineer degree admission, IIT iisp professor video lecture available on it.

Search engine website... Duck duck go, Bing, yippy, Wolfram alpha, start page use these search engine.

Website..www.scienceworld.wolfram.com this website is helpful for science education student's learning helpful.