Facebook Graph API Introduction

// Basic public profile info. No extra permissions needed.
FB.api('me', function(response) {
    ....
}

// Profile picture. No extra permissions needed
FB.api('me/picture', function(response) {
    ....
}
// OR just get the user id and place id here.
<img src="http://graph.facebook.com//picture" />

// Get friend lists. read_friendlists permissions.
FB.api('me?fields=friendlists', function(response) {
    ....
}

// Get friend lists. Requires friends_location, friends_hometown
FB.api('me?fields=friends.fields(location,first_name,hometown)', function(response) {
    ....
}

// Get friends with friend lists. Requires read_friendlists permission
FB.api('me?fields=friendlists.fields(name,members)', function(response) {
    ....
}

// Get friends' location with lat long. This is an example on how to use FQL to get complex data.
FB.api(
    {
        method: 'fql.multiquery',
        queries: {
            'query1' : 'SELECT uid, name, pic_square, current_location FROM user WHERE uid IN (SELECT uid2 FROM friend WHERE uid1 = me())',
            'query2' : 'SELECT page_id, name, latitude, longitude FROM place WHERE page_id IN (SELECT current_location FROM #query1)'
        }
    },
    function(response) {
        ...
    }
);

// Get friend's post on my wall.
FB.api(
    {
        method: 'fql.query',
        query: 'SELECT post_id, actor_id, target_id, message FROM stream WHERE source_id = me() AND actor_id != me() LIMIT 100;'
    },
    function(response) {
        ...
    }
);

// Get friend's post on my wall.
FB.api(
    {
        method: 'fql.multiquery',
        queries: {
            'query1': 'SELECT post_id, actor_id, target_id, message FROM stream WHERE source_id = me() AND actor_id != me() LIMIT 100;',
            'query2' : 'select name, current_location from user where uid IN (select actor_id from #query1)'}
    },
    function(response) {
        ...
    }
);