The main action you can perform with the IDE is editing text (i.e. editing pascal source code), and this action is primarily performed using the keyboard. Using the IDE to edit text is very similiar to using other Windows programs to edit text, so this process will not be described in detail.
One thing you may not be aware of, although many other Windows programs support it, is that you can select text using the keyboard (see Selecting a section of text for more information). Also worth mentioning is that the IDE allows you to indent and unindent selected text using the Tab key, as long as the selection starts at the beginning of the first line (see Indenting a section of text and. Unindenting a section of text for more information).