Query - student, skill

I have three tables - one with student ids and names, second one with skill ids and names, third one listing which students have which skills.
test=# \d stud
                                 Table "public.stud"
 Column |          Type          |                     Modifiers                    
--------+------------------------+---------------------------------------------------
 id     | integer                | not null default nextval('stud_id_seq'::regclass)
 name   | character varying(100) |

test=# \d stud_skill
   Table "public.stud_skill"
  Column  |  Type   | Modifiers
----------+---------+-----------
 stud_id  | integer |
 skill_id | integer |

test=# \d skill
                                 Table "public.skill"
 Column  |          Type          |                     Modifiers                     
---------+------------------------+----------------------------------------------------
 id      | integer                | not null default nextval('skill_id_seq'::regclass)
 sk_name | character varying(100) |