SELECT 2 tables, proper syntax?

Before anything else I"m using MyISAM since my hosting don’t support InnoDB.

I have two tables that has columns,

1st table: users_swap
and the columns are


usid,
us_id,
swap_id

note: us_id came from 'users' table.

2nd table: swap
and the columns are


swap_id,
date_posted,
offering,
seeking

I want to SELECT swap_id and offering columns from swap table.
Using a specific user_id from users_swap table

I hope I explained it clearly.
So what is the right SELECT syntax?

Thank you very very much in advanced.

JOIN the tables: http://dev.mysql.com/doc/refman/5.5/en/join.html