What is the best strategy for preparing TOEFL IBT exam ?

What are the good materials to prepare for this exam ? 

PS (give me the exact names of the materials please)

Please, I really need help here, I am soooooo confused, there are alot of kinds of materials, and i don't know what should i do, and from where i should start.

so, please give me your help from your experience, or if you really have good information.

thanks