Roti making is an art that can be mastered with little practise. With precise instruction you can be an expert roti maker too.
Freezing: Freezing warm roti will give you soft chapati after re-heating. Just put a pile of roti in zip lock bags and freeze. When required, heat frozen roti directly on tawa. And you'll have almost fresh homemade roti. You can use frozen roti up-to 15 days.