Messages

Hi,
I am new with the GPS using. I downloaded the software, also was successful with downloading maps, I know how to switch it to offline usage, but I have no idea how to navigate myself to some specific location. I saved some POI, but I don't know how to make the program to see some line which I have to follow.
I was searching here in the forum and also on the web, but no chance, could you please post here some link or a short manual how to start navigating?
Thank you.