If you began working with a text a context menu will become very useful to you. The context menu is a menu which will appear when you'll click your mouse right button anywhere inside the editing area.
Other options may appear if you click on an object you've created or inserted e.g.a table:
If you want to access the options of the menu point the cursor on the function you want to run. The function will highlight and then you can click it. Some of the functions maybe disabled. For example: the cut and copy function will be disabled if the text isn't highlighted.