delete columm help

Hi there,

I am just starting to use PostgreSQL, and I couldn't find the answer on
the
PostgreSQL site...so if any one could help me it would be very
appreciated.

1) Good books/reference on PostgreSQL for a novice?
2) How do I delete a columm from a table, I have tried to use the
following:

DELETE FROM table_name columm_name

Thanks much,

JP