Hello,
I am writing here because I could not find anywhere on the internet any instructions on how to write jQuery using Magento. I am a complete beginner with all this. I have applied for a part time internship and the company is testing my abilities in working with Magento. I have the following task and no clue where to start from:
I'm pretty sure you can achieve it without writing a single line of PHP code. You can write html / javascript / css to CMS Page Content area (you need to turn off WYSIWYG editor first though). You can use Google repository to load jQuery and run jQuery.noConflict() as otherwise it'll conflict with Magento built in Prototype framework.
First thing you'll have to research since you are using jquery alongside prototype is to enable jquery noconflict so they won't mutually explode. Otherwise the cart functions go south.