I think this is the good site to learn anything of your course but not best.
One main thing in this site is that it gives all solutions of RDSHARMA for all classes if you have any problems on doing the sums of RD SHARMA you take the help of this site. On bad thing in this site is that it's service is not so good .
It's subscription amount is so high and it doesn't give best information for anything so I suggest you that not subscribe this site . It's service quality
is so bad . But it is easy to operate this site easily I suggest Simplilearn site is best in this site you get all information about you questions and it's service is so good