IIT

Hello,
It's good to see students are clear in their thought process which branch they have to go which examination they have to compete for. To tell you a specific course, books and coaching that you should use for 10th IIT foundation is tough to answer. Every year the course is changing so it not possible to answer any one book that alone could be prove beneficial to you and there's no point of wasting 1000s of money in books. If you really want to prepare for IIT and want to clear then in my opinion you should go for M-Learning India online classes where you are taught online and given lectures on each and every topic by qualified teachers.
They have interactive class and don't use the traditional methods to teach where you get to sleep. In this way you will save your money and time as well. They have their own M-Learning Study Material which is effective for the preparation of competitive examination like NEET IIT-JEE. They also keep you updated with the new pattern in which questions can be put up. To test your knowledge go for their question series and test series. Don't worry about the doubts each week they conduct their doubt classes where you can get all your confusion done.
I hope my suggestion works for you. Good luck.