Which is the best online course (paid or free) that is only for JEE Advanced? I need a course that also provides lectures and explanatory notes.

Hello Aspirant,The online platform now a days has become a good source of information for students who can't go to prestigious coaching across the country.you can follow UNACADEMY, its a very good online platform, most of the teachers of UNACADEMY are from Kota and are the prestigious teachers of the country,or ETOOS is also good they give video lecture which are recorded in coaching,but UNACADEMY provides live classes so it is more good.
More over there are different YouTube channel like Any Time padai Academy,Kapil Verbal, New Online Era Coaching centre etc you can watch their video on YouTube.

Hello dear student,

If you want it this you can try for Aakash tablet. That will be really helpful for you as they also consist of lectures and test series. That is really very beneficial and it will help you for your preparation of the exam . Aakash itab. I hope this was helpful

Thank you