Report showing child entities data for Accounts

Hi Guys,

I am looking for help to create a report which will return selected child entity data for a specific account. I could do this in Access without any issues but I am lost in CRM 2013.

I am looking to create a report in the style of this:

ACCOUNT NAME

OPPORTUNITIES

opportunity 1

opportunity 2

CONTRACTS

contract 1

contract 2

contract 3

CASES

case 1

I would like to be able to specify which fields from the child entities to return and also add some sorting. I have tried using the in-built report wizard, but I cant figure out where to start with this report. I have created many other reports but one showing this many child items I cant work out how to create.

Any help would be much appreciated.

Many thanks