What did the Corinthians actually believe?

I'm in the process of reading up on Paulus of Tarsus again. Don't worry, I'm not getting converted, I'm just studying the thing.

I happened upon a question I can't find any answer to. Here it is:

1 Cor 15, 12f:

Quote:

Now if Christ is preached that He has been raised from the dead, how do some among you say that there is no resurrection of the dead? But if there is no resurrection of the dead, then Christ is not risen.

So, if some Corinthians believed there to be no resurrection - how did they make sense of the christian gospel? Do we have any information on what they actually believed? Reading 1 Cor, it seems to me like a horrid mess of inconsistent beliefs anyway, but apart from that - did they believe they would just not die, and thus there was no need for resurrection? (A belief soon doomed to fail...) Did they just not think straight? What was going on there?