selecting text on a webpage using a bluetooth keyboard and voiceover.

/hello. not sure if this is in the right place, but was just wondering how you select text when youre reading an article or email for example. when editing my own text or document I /can do it just fine but it seems the same actions dont work on a webpage...I read somewhere that the way to do it is to press the voice over key then entre, but I dont know what the voice over key is or where it is. can anyone help... thanks.