Back in my days, managing a project was only planning and budget, but experience has taught me that there is more than that to be a good project manager.

PM Manage project is free and has been created to help PMs to shape their projects and to do their daily tasks.

There are documentation about managing project. You can try the different tools by creating a new project and looking at it .
In a project (BUILD) you can manage its phases (stakeholders , inputs , tasks and outputs).

Applications (RUN) are linked to specifics objects: versions , environments , documents , stakeholders and tasks .

There are objects living with projects and applications (alerts , risks , defects , budget , reports , actions , requirements , change requests , assumptions and decisions ).

Now you can register , login and create your own project/application. Later you will be able to manage users abled to read/update it.