Best way to commute from sector 20, airoli to mahape using public transit? Please let the response be in detail (like what app to use to book tickets, which route number or train timings/what train class to book) as I'm new to navi Mumbai

Best way to commute from sector 20, airoli to mahape using public transit? Please let the response be in detail (like what app to use to book tickets, which route number or train timings/what train class to book) as I'm new to navi Mumbai