Early on it's best to keep it strictly to logistics, especially if you are new to game/trp.

The risk with text game is that it's very easy to fuck up. Something you say gets misinterpreted. You come across as too needy and available. Or the conversation gets boring and they dry up. You also want to be focussing on meeting her and fucking, not giving her free validation.

Once you've fucked, or if you did a good job in building attraction before you got the number - then they should be initiating contact and general chit chat with you. In which case you can then just reply and have some light hearted conversation/flirting.

Certainly the younger girls love texting. If they make conversation with you then just respond and play along. But don't get too invested, don't be too available, and try to keep it in a flirty/sexual frame. When in doubt, err on the side of texting less.

The only exception is if you haven't met/fucked yet, and the meet is organised for quite a few days away. Lets say you've got a date organised a week from now. It's worth drip feeding texts to keep her on the hook. Go a day or two without texting, then drop her a random low effort text. Let the conversation fizzle, wait a day or two, another text. Do that until the date.

For years I kept texting to strictly logistics. That means like every 3-5 days I'd hit her up and plan the next date, seeing her every 3-5 days. This is red pill strategies 101, one of the first things you learn in the art of seduction. I got a serious girlfriend who really fell in love with me and was constantly complaining about it, but still showed up when invited and was seriously into me. I guess she liked the chase / mystery. She's an actually good girl who wants marriage and a family and I'm a man slut who constantly has multiple women, many close to 10 years younger than her (28).

These side peices I didn't care so much about red pill strategy and texted them whenever I want. Losing side pieces doesn't hurt, really it only sucks to lose a lead when you have nothing else going on. Anyway, I texted some of these girls every day just making conversation, and found that it's actually more successful than texting only for logistics. I can get a girl to start catching feelings for me within one week of texting daily. Blowing me passionately when we meet, shaking when I touch them, you just know. I ended things with my gf because I'm not trying to get married right now, and my new strategy for the last 6 months since then has been just text girls all the time.

Make some convo, but the trick is to respond ASAP (golden is 3-4 minutes, its not too quick but not long enough to cool down). That way she responds quickly too, and you can actually get a decent convo going. The main benefit though is that you can't overthink it. Thinking of a good text is exhausting. If you force yourself to send it off within 4 minutes you move on with your day and think about other shit.

Ask her about what her routine is, what restaurants she likes, where she gets coffee, what she is up to, has she been to x place. Women are self-centered as hell and love to talk about themselves. Especially young women in their prime. Women under 25 have grown up with texting as the main form of communication. I'd still try to keep seeing her to 2 times a week max, but I tend to text every day with girls Im talking to.