You can discuss sex, religion, and politics - but remember if the date disagrees with you on any issues, don't get all defensive and try to sway the person to your POV, and in return the date should do the same. Also remember that SOME people are too embarrassed to talk about sex issues - even if they are innocent issues. I find this annoying - and find that some men are ******* when it comes to discussing anything remotely related to sex.
Don't ask about previous relationships. If you talk about your own previous relationships, keep it very general such as "I dated a person who thought it was inappropriate for a women to curse." , for example. Don't get into names and how he or she broke your heart etc..
I also find that some people are uncomfortable talking about their jobs because they are not doing what they think they should be doing. That said, I'd let the date bring up his or her job on their own.
If you're at the table and he shows up let him pull up his own chair. But if you are going out the door you can hold it for him. This is just how I would operate.
I hate dating. Yet, it's high time I had one 'cuz I've been too isolated lately. People are too touchy and annoying at first. It is hard to get past that initial phase where you feel you can be yourself.
My advice for the date is to be yourself BUT not too much yourself. We are all weirdos but the thing is to let your uniqueness and the good/weird things about you show slowly so the other person gets to see all your good points first without making assumptions about you that are not true. Then afterward slowly let them see your quirks. It's a difficult trick to master - how much to reveal at first. I've found that when I reveal innocent quirks about myself, some people tend to make snap judgements about this and this really pisses me off. For example, I'm vegetarian but not a zealot about it and I don't try to make non-veggies feel badly about what they eat. But even the mere mention of my vegetarianism has set people off - made them feel inadequate or something. Again, this annoys me.
As I said I hate dating because I find that I am too casual and have sent the message to my dates that I'm not interested in them which may or may not have been true.
Good luck and enjoy your date!!!