If you want to crack JEE easily make sure your concepts are clear. Solve previous year papers to know about the exam pattern of the exam and to know level of questions. Here are some important tips you can prefer.

• Build and Focus on your strengths
• Check your short Notes & Revise the important formulae:
• Don't go on doing Mock Tests
• Dont let self -doubt creep in
• Gets sufficient practice and revision
• Try to solve at least 70-80 numerical every day.
• Do read, errors and measurement, environmental chemistry, and sets, relations.
• Read the questions first and mark which would ypu do first. This will definitely avoid wastage of time on other questions.

Good Luck!