The first step is a lot of reading and research. The second step is reading and research, then you will probably be ready for some questions.
There is no shortcuts this will take you some time and there is no armor walmart. There are many guys who make armor, and there are multiple guys who make each type Boba Fett and Republic Commando.
Welcome to the forum, make yourself at home, sit back and read posts for a while. Most of your questions can be found here already answered.