I'm not sure about shops. Nor do i know websites that have written content to teach you about design. BUT... on tumblr website they have a lot of pages that have pictures of beautifully designed rooms that you could learn from visually and get inspiration from. I highly recommend, searching the pages below. They have tonnes of pictures of beautiful interior design.

Go to tumblr.com and search for;

breadandolives

honeyxash

homedecorobsession

I have always used Shutterfly for my interior design needs because everything is customizable. I have a lot of home decor and wall art hanging in my living room and bedrooms. A lot of Shutterfly's blog posts are helpful guides to interior designing and tips on decorating.

Here are a few of the sites you might want to look at:

http://www.shutterfly.com/home-decor

http://www.shutterfly.com/photo-gifts/wa...

http://blog.shutterfly.com/

I am in high school and want to start working on my career early. I would enjoy being a interior designer because I love decorating around home, and designing new rooms as well as planning themes for the rooms. So I was wondering what are some good decor websites to shop on, and what are some good interior design websites that can teach you new things and train you a little to be a designer?