As you want to take the exam of IIT JEE main so here is Preparation tips :

Important Tips for JEE Main preparation

Dream to Achieve

Prepare a Timetable

Strengthen Important & Key Concepts

Solve Previous Year Papers

IIT JEE Online Preparation

Positivity

JEE Main 2016 Paper Pattern

Paper pattern for Paper I –

Computer Based Exam (Online) & Pen & Paper Based Exam (Offline)

Objective type question with multiple choices

Each question carries 4 marks & one negative mark is deducted for each wrong attempt

Paper I shall be comprised of Physics, Chemistry & Mathematics questions with equal weight-age to all 3 subjects.

Time duration: 3 hours

Paper pattern for Paper II

Paper II is being conducted for admissions into Architecture/Planning Courses.

The entire paper is divided into three parts: Part I – Mathematics, Part II – Aptitude Test, Part III – Drawing Test