It is a genuine forum, a lot of the people on there do make some money through internet marketing techniques such as affiliate programs. A lot of the WP plugins on there are a bit crap, but they appeal to the internet marketing crowd.
What you need to distinguish between is the forum itself, where if you wanted to take up internet marketing you might find some useful information, and the WSO (Warrior Special Offers) Forum which is just full of people selling crap to gullible idiots
Usually your functions.php would contain something like this to register a slider:
wp_register_script( 'slider', get_template_directory_uri() . '/js/slider.js' ); wp_enqueue_script( 'jquery' ); wp_enqueue_script( 'slider' );
or, you can use this, which has the dependency jQuery so you don’t need to enqueue it separately.
wp_register_script( 'slider', get_template_directory_uri() . '/js/slider.js', array( 'jquery' ) ); wp_enqueue_script( 'slider' );
Finally in the simplest form, you can just use this:
wp_enqueue_script( 'slider', get_template_directory_uri() . '/js/slider.js', array( 'jquery' ) );
I agree, not cool.
I’m a bit confused about what you’re looking for… as far as I know this is how most portfolio themes work, this is how I do it anyway:
A portfolio item is added through the custom post type ‘Portfolio’, this just looks like a standard post, but is added through a separate menu within WordPress.
The image shown in the area of the theme that displays portfolio items is the featured image, or post thumbnail, set when you create the post.
Clicking on this thumbnail will usually take you to the actual post, which is whatever the user puts into the WYSIWYG editor within the post creation screen. Most themes choose to show the featured image on this page as well, but in full size.
This whole process is separate from standard posts, usually with separate categories and tags.