The advice you got above is on the money. Communication like everything else when working with another person is key. Talking about what you like, what turns you on is only going to bring you closer together as a couple. Start slow and try different things. Scarves and belts are a nice way to get into gentle bondage. Try initiating sex in different places like the kitchen or shower if you aren't already. If you've got the right kind of backyard, out door sex can be exciting. Some of these ideas aren't strictly BDSM, but if you take charge of your wife in a fun, loving manner and initiate sex in unexpected ways, it'll pay dividends. Also try things like holding her wrists above her hands in a firm, but not painful grip and press her against the wall as you tease her body. In the right setting, you might try gentle smacks on her ass.

Everything progresses slowly and as you talk, you'll find out different things that turn you both on and then can move into other areas. Setting the mood can be great with candles and music and blindfolds, talk to her as you bind her and tease her, let her know how important she is to you. I mean this isn't exactly just BDSM advice, but as you try different things and get to know what excites your wife, your repertoire will grow and you can move into more controlling ideas if you are both aroused by them.

I have to say as I read the advice above, it's pretty good stuff. I think you'll find that thinking about what each other likes and talking about sex and bringing in new and fresh techniques is going to be a wonderful time in your relationship. You might also introduce a vibrator or cucumber into your play. I know I always enjoyed these kind of things with my partner.

Oh and finally, try not to be hurt if she doesn't like something. That's the point of communication. For example, I don't like to have my neck touched. I'm too sensitive there and even gentle strokes can be almost unpleasant for me. But I love attention being paid to my feet. And if you don't like something, try to find a way to let her know honestly what you do and don't like.

Best wishes!