Most components of the Together user interface have speedmenus (also knows as "context" or "right-click" menus). If you're not sure how to do something, check these menus for appropriate commands.
Commonly-needed Main menu commands have parallel icons on the Main toolbar and display the same icon that appears on the toolbar.
Use the View menu or Main Toolbar to show/hide panes. Note the keyboard shortcuts for these too.
You can create diagram-only or code-only views by hiding the pane you don't need. Use the View menu or pane toggles on the Main Toolbar.
Create wide views by hiding the Explorer pane.
There are movable separators between the major panes. Use them to resize an individual pane or window region.
When you have a diagram open in the diagram pane, you can use the Explorer to select specific elements (Classes or Use Cases for example).
Use the Model tab for an Explorer-style view of the main diagram elements. Click on the element you want to select in the diagram and the diagram will display it selected.
Use the Overview tab for a thumbnail view of the current diagram. Drag the shadow to move the view; resize the shadow to adjust the zoom level.
If something is missing in a diagram that you think should be there, check
View Management Options (Options | Default | View Management). These options may be set to hide some diagram elements. The status bar displays an icon when one or more of the Show options is set to filter something out from view.
Show Hidden dialog (Diagram speedmenu). This will show you any elements hidden with the Hide speedmenu command.
Opening files: You can open files from the Directory pane or the Editor pane using their speedmenus.