Drop Down Menu Questions (Please Help)

[Peepers]

I'll start this out with a disclaimer. I own a business and had to teach myself how to develop for the web to design the website. I am about 4 months into my self-taught web design, and I am not very good at it. So bear with me please if I am very noobish about some of your recommendation.

 

Now, here is my website (or test site) https://22mods4alltest.22mods4all.com/test/en/ on the order page  https://22mods4alltest.22mods4all.com/test/en/home/147-customize-your-16-556223-ar15-upper-receiver.html you'll see drop down menus for different options for different items. The issue I am running into is that I am not able to put the detail and images I want for each item to make it useful and acceptable to customers. If you look at ibuypower's page http://www.ibuypower.com/Store/Special-A you'll notice that they have drop down menus on customization with little question marks next to them. If you click the question mark you can see more details and images on the add-on's. I would love to do something like this. Does anyone know how to do this? Where to begin? Thanks for your input!

[Peepers]

Anyone have any information on this?