Noob to subbing questions about text only dynamic

Hi everyone

I’ve found myself in a kinky dynamic with a guy who I started chatting with on an internet space I will not name. It’s my first kinky relationship and first online relationship.

I really like him. I liked him a lot before we went kinky, but I don’t know what the hell I’m doing?? I don’t want to fuck it up by asking him lots of newbie questions if it breaks the magic. I’m just being myself really and hoping for the best.

It all seems so normal tbh, he wants to look after me and nurture me, he has a few rules for me, gets to decide on outfits etc. and I am not complaining at all. He needs a mind connection and not just kinky sex. That’s fine with me. I’m naturally not straight laced vanilla in my preferences anyway but I’ve never done a formal bdsm thing. I’m also mid -40s with about as much sense as a teenager (part of the attraction I suppose?)

What resources can help me? What should I know? How can I know he feels as happy with things as I do? Things are on text only right now as we’re taking things slowly. But lots of the advice I’ve read on vibe checking etc. is aimed at in-person. He seems interested in me and considerate. I would be disappointed if things weren’t how he said they were so I’m a bit scared about that. I do like things how they are but I wonder where it’ll end up? He’s not keen to rush into meeting up, and I trust him to take the lead on that.

Also what does a sub do for a dom like that to show her appreciation?

And, if I break any “rules” am I supposed to tell him? Or do I just pretend I didn’t?