How do I get from Orlando Fl. To Largo Fl. By a bus?

I've taken a good amount of buses before. But I know that the lynx bus doesn't go that far. And there bus system is called psta if that helps. But I was thinking about a greyhound, but I've never taken one before and I don't know where it's at and how much and blah blah blah. I'm cool with transfers and all that. Just wanting to know how to get there by a bus. Sooooo some answers would be appreciateddd! :D