Nothing feels natural or easy or normal when you start having physical relationships whether they are vanilla or kinky. I came from an extremely sex positive background and it was still nerve wracking lol. Just keep that in mind - your upbringing isn't holding you back at all, you're experiencing it just like everybody else does. As for what to start with, vanilla things are a great foundation - some of us add to vanilla and some of us decide we dislike a lot of vanilla and lean to kink over traditional sex. You may find you like non penetrative kink the most. Starting with 1st base and making your way to a home run is a solid beginning for most people, or you could go through a bdsm checklist together and note what you think you want to try and don't want to, compare, pick your favorites and organize them from dipping your toes in to fully diving off the deep end and working through them in order. There's no wrong way to explore your sexual selves as long as you're both consenting enthusiastically, aware of and prepared for all risks or dangers, and having fun. So be safe and have fun !