Querying three tables at once SQLite

I need some help sorting out my queries, it's the first time I've run into the need to query three tables at once so I'm a little lost.

The database looks like this:

1[COMPANY]  --- <has> --- *[ACCOUNTS]1  --- <has> --- *[PAYMENTS]

Table COMPANY  has columns: CompID | CompanyName  |
Table ACCOUNTS has columns: AccID  | Name         | Company     |
Table PAYMENTS has columns: PayID  | GroupID      | PaymentDue  | DateDue

where Company references CompID and GroupID references AccID.

I need to:

1. Get ALL COMPANIES


2. Get the number of ACCOUNTS under a COMPANY


3. Total all the PAYMENTS of the ACCOUNTS in a COMPANY based on the closest date to the current date.

This is how my display should look:

 COMPANY      | No. of ACCOUNTS | TOTAL DUE        | DATE DUE 
 'Comp 1'     |       3         | 10000            | 4/30/2015            
 'Comp 2'     |       2         | 8000             | 4/30/2015      

Doing this one by one is easy enough ( except the 3rd, I don't know how to get that done yet ) but getting them all in one go with so many conditions is confusing me. Can anyone give me a general idea of what a query for this case would look like?