pSyToR on "Plugin Development - jQuery ... How the... am i supposed to..."

Hi Everyone,

I found 100s of different ways to do it... But I just can't get my head around it... I just cannot find anything clear on how to do it... And whatever I try it just doesn't work.

I tried to read the codex... and the developer handbook... and many other other... website... and even more than that... I just cannot make jQuery work...

Does ANYONE has a clear guide on how to do it... Or an example I could include in my file to understand how this thing work?

For example I did the following:

function easyreg_load_jquery(){
    wp_enqueue_script('jquery');
}

add_action('wp_enqueue_scripts', 'easyreg_load_jquery');

Load the jQuery and then run it with the hook for wp_enqueue_scripts.

Once this is done, from what I read everywhere I should be able to use a jQuery script inside my plugin (directly not even in a .JS file).

jQuery(document).ready(function(){
/do something
});

But "jquery is not recognised"...

I tried to link to a JS script... but it doesn't seem to be loaded... Which is why I would need a script to give me a PROPER working example.

I am not pointing to any other jQuery in my plugin, it's the only time I'm calling it...

I just need a simple script to disable some fields in my Admin section of my plugin I cannot believe it is so complicated... I'm sure I'm just missing a little something