I'm planning to try tabletop roleplaying with a few of my friends, and they like the idea. I'm fairly new to the field, though, so I don't know much about what tabletop systems are appropriate for us. There's a place in my city that sells various roleplaying resources, including the classic DnD, so I can check the website for anything you recommend. 

Suggestions? If we do settle on Dungeons and Dragons, should I consider buying the $25 (au) starter set or the $60 fifth edition manual? Should I look into finding manuals as .PDFs online or is that unviable?