Whenever you need an overview of key project data, just click on Report icon in the left menu and you'll instantly get through to the project's dashboard page.
Looking at the page you can quickly check
1., your monthly report of total hours logged by project members
2., an activity based project hour report of all project hours logged in the given month
3., the daily split of logged hours by activities
4., a list of those cards your project members were engaged with and logged their hours to.
You can also quickly overview your monthly tasks' status here (check Status column in the table) and check usage of estimated workload by cards. In case you need to further investigate about a card just click on its name to open it.
To check data of a given month use the month selector on top:
Activity types for time logging can be added and managed in Team section. For more details please check this article.