Commutation is extremely flexible to reach both of these places. The easiest and fastest way to reach is via metro. If you are planning to visit the mosque situated at Esplanede, then you have to get off at Esplanede station and from there it’s a 2 mins walk down the lane. And if you are planning to visit the one near Tollygunge, then you have to get off at Rabindra Sarovar metro station and come out from Gate Nos 6. From there, you can either take an auto or walk which would take approximately 5-10 mins.
Photography is not prohibited inside the mosques; hence if you are a shutterbug, then do not forget to capture the fine architecture of the domes and minarets.
Tipu Sultan mosque in Tollygunge is also well known for its initiative towards generating electricity via solar panels. They have installed solar panels around the mosque and will be soon generating almost half of the electricity of that place.