Is it important to go for coaching for the EAMCET?

Yes, if you don't have good mentor to direct you how to hunt the exams. coaching save your time and directing you towards targeted syllabus.

If you have some problem then follow this it may help you in better scoring.

First of all don't fallow multiple resources and suggestions. They will confuse you and wast your time. Search for trusted resources and understand the exam pattern. In any exam question paper difficulty label is designed in the ratio of 40:30:30 . 40% question are easy that dosen't mean you can solve every question.  It implies if you have read those topics then you can easily answer them. 30% question have average difficulty. So give more attention on these two categories of questions instead of wasting your time for hunting difficult question. It will be better if you manage your time in same ratio.  It's misconception that if you have done the difficult question then you can easily solve the easy question. No, easy problems take less time in exams and if you worked on them very well . They save your time for difficult question and you can easily solve few questions. Don't waste time on altra difficult question, it's time wasting.

I would tell it is not compulsory to go for coaching for eamcet preparation.

If u are disciplined enough using ur Telugu academy books u can do very in exam.

Follow a disciplined routine.

Find a mentor.

Don't procrastinate.

Have patience.

But if u feel that u need a constant push through out ur journey then please go for coaching.

All the best for ur exam