There are both pros and cons of studying online. But with time the number of cons is decreasing and the number of pros is increasing. Online study makes your study easy and anytime accessible.
Joining online course, for IIT JEE or any exam for that point of matter, can only help when you study, hard and smart both. Without studying properly, it is very difficult to clear an exam even if you take offline coaching.
JEE MAIN TIPS has certain advantages over offline, such as:
Less or no time waste (for eg, in travelling managing notes etc.)
No chaos caused by multiple and bulky books (everything is in your gadget)
Anytime access to the notes
All the data at one place
And now, there are some online education institutes which provide doubt solution facilities too, where you can call or message their expert team and get your quires solved.
These days studying online has become handy and it has eased the process of learning.
I hope you will find his helpful.
All the best!!