The tool acts a lot like the type tool in Photoshop. Wherever you place it, it will think you want a new typing object. Place it, type and then remember to drag over areas where you want to highlight (hold down the mouse between letters and drag a little first, then redrag or use shift and arrows to move across text).
Also, if you want to fill a set area, click a corner of the area and drag to start your shape. You can change that shape with the pointer tool.
Other than that, the text objects each act like their own page of text. You can use the justification tools to center, justify and paragraph style them; you can use the graphics options to color and glow them.
IF you want it all as one text object, draw a large square to fill the area you want the text in. You can fill it like a page of text (it will function like a screen sized page). You can vary your text and your paragraph styles just like normal text editing.