C , how to create thread using pthread_create function

I'm making a c file for a dispatch queue that gets a task and put it in to a queue which is the linked list. In order to do this, I need to create threads using

pthread_t cThread;
if(pthread_create(&cThread, NULL, work, param)){
    perror("ERROR creating thread.");
}

However I need to make another function that goes into 'work' and 'param' variable as parameters of create function. My friend told me that I just need to put any code in the work function that loops infinitely so the thread does not die.. Can anyone explain each parameter goes in to the pthread_create function- especially for work and param? I searched Google for this, but most of tutorials are so hard to understand the concept...