This was requested a few weeks ago by a few. I'm no expert yet so this is just a basic, barebones tutorial.
Here's what you will need:
1. Nailpolish remover
2. Suitable polish for stamping*
3. Konad scraper
4. Konad stamper
5. Image plate
Step 1: Use a paper towel (not a tissue or anything that leaves annoying lint behind) to clean the plate, the stamp surface, and the scraper.
Step 2: Apply a thin coat of polish on the top of the desired pattern.
Step 3: Scrape the pattern in 1 motion, thus removing excess polish.
Step 4: Quickly roll over the pattern with your stamper - don't wait too long after scraping!
If you didn't scrape off too much or take too long, the pattern should transfer easily:
Don't worry if the excess polish transfers too. You'll see below that because the stamping surface is concave, it won't get stamped on accidentally.
Step 5: Orient the stamper to whatever position you want the pattern to be. Press down and roll it gently on your nail from one side to the other. The pattern should transfer onto your nail now:
*For best results, you either can use the Konad polish, or any polish with a thicker consistency. Metallic/chrome finishes tend to work best as well. I've tried some thinner polishes that just won't transfer well onto the stamp no matter what.