Unable to get this data structure to work (newbie)

Unable to get this data structure to work (newbie)

I'm pretty new to C, and I've been trying to make a program with this data
structure:
struct node {
char command[100];
char prereq[100][80];
char *targ;
int isUpdated;
} Node;
However, whenever I try to implement it in the code, like this:
Node n = malloc(sizeof(*n));
I get compiler errors such as "nmake.c:13:31: error: unknown type name
'Node'".
I've tried code such as:
typedef struct node *Node;
with similar results. What's wrong?