Have you ever gone to a stamp party or scrapbook event and learned that you have a knack for putting things together? After you buy some of the products to get started, you go home and then learn that everything you learned that night seems to have vanished. So, now what? There are oodles of resources available on the internet and you could even take a class but what are you going to do right at that moment?
Don't panic - it's easier than you think. Like scrapbook layouts, cards have a basic form factor that can be used so that you don't have to think about "designing" at this stage . If you have basic white card stock and standard envelopes, you can get started. You could also go to your local craft store and buy cards and envelopes by the bundle.
Here are some basic layouts you could use to get you started. By adding your choice of paper, embellishments and die cuts, your card is done. How easy is that? Not sure what colors to use? Check out other card makers on blogs or scrapbook site galleries - that'll give you an idea to get you started.
Remember to keep in mind of copyright infringements and though some do not mind that you "scrap lift" (copying the design) but you should read the site carefully to see if this is okay.