char * enigma

Hello
I'm trying to understand how char* works. I searched all the day but I couldn't find a good explanation...
When creating a pointer you initialize it with an address,for example:

int a;
int *p=&a;

So the side left the equal sign is an address.
In this case:

char *p="troll";

The left side doesn't look like an address...
Can someone explain me how this work ?