How to prepare for Mumbai Rains ?

I am new to Mumbai and soon the monsoon will start.

I want tips on how to make my life a bit easier in this season.

I live in Malad East, near Malad station (station is walking distance from my flat).

I go to BKC, as my office is there.

I usually take the AC local from Malad to Bandra and then auto from Bandra station to BKC.

Then at return i take the local train from Bandra to Malad.

So what problems i can face in my daily commute and any tips for that will be greatly appreciated.

Thanks!!