Question

i want to start studying physics , where should i start from ? what is the syllabus ? which book should i use ?

Answer 1

Well, generally, a curriculum would look like the following:
Physics 1: kinematics and motion
Physics 2: electromagnetism
Physics 3: modern physics

Then you would get into more specific courses, such as:
Physical Mechanics
EM Theory
Quantum Mechanics
Subatomic Physics
Thermodynamics and Statistical Mechanics
Optics

One of the major books that covers all of the topics in Physics 1-3 (and used by many universities) is University Physics by Young and Freedman. Otherwise, you'll need to find more specific books. Griffiths is a popular author in EM Theory and Quantum. For others, I don't have any recommendations.