how can I become chartered accountant

First of all before starting your prepration prepare your mind for CA, because it needs full dedication, its not tough but hard work is must. One should be regular in his/her studies. Daily revision and practice makes easy for you to clear CA exams. I am quoting certain steps for becoming CA here:-

1. First of all you will have to register for your entrance exam which is CPT at our indian institute for CA (ICAI). There are two attempts for this in a yera in June and another in December, select your attempt and fill the form accordingly. For June attempts forms are available from January. You can also fills the form online which saves your cost and time. You will get link at ICAI website for online filling.
2. Then after passing out CPT regiater for your Intermediate level which is IPCC. It has two groups with 7 subjects. You can give both group individually as well as combined according to your caliber. According to me giving both group combined is better because you get set off benefits in it. Then after registration you will get your Study materials delivered at your home. You get nine months for clearing IPCC at your attempt you can also skip attempts if you want to prepare more.
3. Then after clearing ipcc there starts your Articleship which is for 3 years. In it your get trained under a CA of your choice. During this 3 years you can start your prepration for your final level but you can give exam only after 2.5 years of articleship.
4. Then after clearing your final level and completing certain formalities you get degree of CA and a unique membership number under which you can practice or you can go for job too.