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 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 with a brown color 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.