How to Pay??

Vikas Panday (Bikku) (37 Points)

23 November 2017  
My GST was registered in August...

I have till the date, Only filled GSTR 3B of August...
Have a Single Invoice of purchase In August...
so I need not Pay any GST??
& Also... The GSTR 1 will be Nill...am I correct??

Now...in September....
I have 3 Invoices of Sales...
So when I'll file the 3B...Do I need to Pay GST directly at the Time of Filling 3B??
or Just Putting the info regarding this in 3B will be enough? & When I'll file the GSTR 1...there I'll have to Pay The GST amount??
if Yes...how?

what's the procedure of Paying the GST??
How Should I pay??

I really need to Know it's procedure!

Please Help me with this.....