Now I have our database almost complete.  I want to explore reports more.  Is there a guide or template report similar to a Timesheet?

I have a table aptly called Timesheet with the following fields:

timesheet_account (Lookup Field)

timesheet_resource (Lookup Field)

timesheet_activity (Lookup Field)

timesheet_start (Date-Time)

timesheet_finish (Date-Time)

Duration (h)

timesheet_description (Multiline)

Ideally, I would like a couple of reports.

1 - A Project summary report listing date, duration and description grouped and subtotalled by activity

2 - A Resource summary report listing activity, duration and description grouped and subtotalled by date

Each report I would like to be able to filter the report on Resource, Account and even start and end dates ranges.