as far as the whole 30 minutes on the phone debate, what i've learned over the years is that it depends on the vibe you get from the chick and what result you want. there is no rule about a specific amount of time. I think establishing a connection over the phone on the first convo is a good thing and having a long convo is overall good (especially if it's one of those "we've been talking for an hour straight??

i didn't even notice!!"). the trick though is that it's better if you're the one who cuts it short. after that, no more long convos unless you want to be her phone BFF.
if you have a good first convo and then just chill without sweating her, you could probably hit on the first night because she'll feel like she knows you PLUS the whole "we won't have anything to talk about" thing will play in your favor. She's also trying to get back that high from the first convo. that connection. maybe it'll be straight sex, no dates or something very low-key. Here's one thing i've learned over the years. When a chick likes you, she is as, if not more nervous than you. She scared that she'll be boring to you and that she won't be able to keep your attention. The difference is that if she starts feeling she has nothing to offer left for your attention, she has that one last resort weapon she thinks you can't say no to (p*ssy). so if she gets a little nervous about this, she'll give it up

.
the key thing to remember is that keeping the vibe going is not just your responsibility. it's hers as well. you,re not her court jester. if there's nothing left to say, she's as responsible as you. So yeah, i'm not against long convos the first time. just dont make a habit out of it.
EDIT: and when you go on that first date make it something simple and informal like walking downtown or at the park or a movie. and the first time you see her, act as if she's already your girlfriend mand as if you have already been fukking her for months.