I’ve done a little reading on the topic of dating/courtship. Perhaps the single most concise and helpful resource that I’ve come across is a chapter in 5 Paths to the Love of Your Life edited by Alex Chediak. The chapter is entitled The Guided Path by Rick Holland. He offers 10 overarching principles that can be contextualized accordingly, instead of a rigid and sometimes legalistic system.
Check it out if you are, or know, anyone who is dating and needs good Biblical advice in this area.