Here is a brief description to get you started, take note that there are three columns in the edit view...for an existing info window ALT/left click the area then right click, choose either "customize" or "close" (close means to
delete the info window) if customizing, you would high-lite an item in the right side column then click the left pointing arrow, your item is now in the center column and you click "save" and exit.(the middle column is for things you want to show for information to you)
To resize or re-position you need to first make the title/borders in the left hand column both "visible" then save exit, now ALT/left click and resize or drag it some where you like, then make the title/borders invisible again and "save"... that's a start for you, messing around with it you will learn which items allow text/color changes over on the left hand side column.
that annoying text you talked about will go away when you make title/borders invisible...a new window is made by ALT/right click any where you want