It took me many days to learn how to understand BBcode and CSS :c
But you have some guides given by Ozzy in the first club's threads !
You can still hit on google: Css guide pokécommunity.
You will have some very helpfull guides.
But remind that you have to be very patient to learn it.
Oh and by the way, there are already prefabricated clubs in a conversation about clubs. But I do not know where it is. It will be enough just copy and paste and you just have to add information like Titles / Members etc...
I wanted to make a Eevee and Eeveelution club since I'm there, but Aryan did it before me, so I created Baby Pokémon Club d:
I think you can find a good idea to attract people in your own club.