Once you've opened a Gedcom file (*.ged) through Control Center you can open views on it.
Views all work on the same underlying data - this means that
*changes in selection to one view might not be reflected in another if the latter cannot follow the selection
Typically you will open one instance per type of view - not necessarily all but combinations that help to navigate and understand the underlying data. For example
The combination is not limited and you'll soon get a feeling for which views fullfill your needs. The views will remember the position and size of the enclosing windows so position them as required and they will pop-up at the same place next time. You can also open several instances of the same view to check out different angles - they're numbered sequentially.
Here now is the list of views at your disposal:
Table View
Tree View
Timeline View
Edit View
Report View
Navigator View
Entity View
Search View
Geo View
please follow the links for more information about the individual views