Dear Aspirant,

JEE Main examination is conducted by NTA for the admissions to UG engineering programs offered by 31 NITs, IIEST Shibpur, 26 IIITs and 29 -Government Funded Technical Institutes (Other-GFTIs).

Of Course yes you can prepare for JEE MAIN with online course consider the course offered by careers360 in the link given below.In this course you will be given comprehensive coverage of all the important topics for JEE MAINS by top faculties from University of Delhi,IIT Delhi and various top institutes.

https://learn.careers360.com/

To know about cut trends for different NITs , IIITs and other Top colleges visit link given below

https://engineering.careers360.com/articles/jee-main-cutoff

GOOD LUCK!!

Hope it Helps,

Dear aspirant,

If you enroll in a proper course with a time duration then obviously you will be charged an amount for that course. But there are many free videos available also in chapter wise and also part wise .

The best apps to access this facilities are vedantu and unacademy. All kinds of features are available there like free mock papers , videos in chapter wise. Vedantu also provides a free crash course for the students. That course is very helpful for brushing up the topics and they also provide some hacks and tricks to provide better learning.

You can download these apps from the playstore and you can access these features.