HELP HELP!

Hey everyone I need help on ring shopping. So I am getting engaged and I need help on picking a ring. My boyfriend is kinda like most boys and don't know what kind of ring to get. I do not know when I will be getting engaged because he wants to surprise me but he wants me to help pick a ring because he wants to get something I like. So can you guys help me, I would really appreciate it. Also can you send me links on where to look for rings too.