Summarize the following:
Go to http://www.minecraftskins.com/. This will open the Skin Index (or Skindex) library. Click on a skin that you would like to use for your Minecraft character. You can also search for a specific skin from the search bar at the top of the page. You can make your own skin if you'd like. If you want to see a long list of skins rather than just the popular ones, click Latest or Top in the upper-left side of the page. It's a button on the right side of the skin's page. Doing so will immediately prompt the skin's file to download to your computer. Depending on your browser's settings, you may first have to select a download location or confirm the download. Go to https://minecraft.net/. This will the Minecraft website. It's in the top-right corner of the page. A drop-down menu will appear. This option is at the top of the drop-down menu. Clicking it takes you to the skin page. If you aren't logged into Minecraft, enter your email address and password and click LOG IN before continuing. It's a white button near the bottom of the screen. Click the skin file that you downloaded. You should see it in your computer's default "Downloads" folder. This option is in the bottom-right corner of the window. Your skin file will be uploaded to the profile page. It's a white button near the bottom of the page. Doing so will change the skin for your current account's character. If you log into Minecraft on your computer using the same account credentials, your character will now have the skin you uploaded.
Open the Minecraft Skindex site. Select a skin. Click Download. Open the Minecraft website. Click . Click Profile. Click select a file. Select your skin file. Click Open. Click Upload.