Generally speaking I give these home learning things a wide berth. Normally you'll find that your local college of futher education does them a lot better and miles cheaper. Hell if anybody else offers me a potential £30k per annum by learning online, I'll [virtually] slap him.
Do you have any design flair or do you let the missus match the cushions and curtains? Do you leave the house wearing navy and black? Do you know how to create a website, do you know what it involves? Do you have any coding experience? Web Designers are two a penny, good web designers are hard to come by but there are still a lot of them around, it's hardly a niche market anymore. If you think you have what it takes, go ahead, but go to your local college before trying these online courses. How much are they charging for the course as a matter of interest?