Can anyone recommend a good site or youtube channel, to practice and learn dance moves, for in the club?

You don't actually have to dance in clubs to be successful in one.

There is no trick to club dancing other than the basics, like staying in rhythm. The key thing you need to understand is that no one cares how you are dancing. Everyone on the dance floor is focusing on themselves and everyone on the side is just jealous that they aren't as cool as you.

Just find a style of music you like and copy some other moves from other people, could be anything. THE WAY YOU DANCE ISN'T THE MOST IMPORTANT. Just type it into youtube "how to dance goth" etc. The dance moves aren't important.

Instead what you should focus on is how to display alpha status on the dance floor.

1. take up as much space as possible.
2. get into the center with everyone surrounding you.
3. don't get jealous if some douche bag dances with your girl.
4. dance at places where other people won't dance (ie. the stage)

Also going to a club that isn't so crowded works great. If there aren't several people dancing alone on the dance floor you are at the wrong club. That way you can go and dance with those alone people. I've noticed that if you dance with the girl before you are significantly more likely to get a response when you give her your phone number.

I love and hate dancing. From my workfield this is my point of view..hoping it helps
In my early days I tried to get the chicks' attention by dancing with hype and sending flirting signals. It wasn't working at all. First, I was disqualifying myself unconsciously by trying too hard and flirting overtly with body language without opening first. Then I realized that I was just fetching tons of unnecessary competition on me, because..there will always be some other joe trying to dance better than the other males hoping to get the girl.
So I screwed all up and dance in the way that fits for myself. I observed that since I have changed my tactics, I can focus more fast and better and choosing the target more accurately. So I got the more important thing which is to be relaxed, and to send the right embers.. I obtained this after many friday nights of practice, adjusting my mindset and tactics in order to be able making eye in the eye approach even if she's moving. When eye in the eye, I start to smile, talk and touch. Well.. this seems to pay back in steroids

what is sexy in a club is a guy who has fun, and not guy who's trying to be sexy, I used to do the same thing as Explosiveamber a few years back and almost never got the girl, now I'm just smiling a lot and doing stupid stuff all over the dance floor, and girls approach me by themselves.

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"StreetLight!! Stop seeing every problem in life like it's a chick you didn't hit on!"