Here is a little Tutorial how to install some great Minecraft Texturepack.
The first Step is to get the Texturepack .zip. You can search in Google or Bing for them, there are thousend of threads there. (My favourite is the Misa HD Texture Pack).
Step two: Delete your Minecraft bin folder. Find it, if you type %appdata% in your explorer.
Step three: Save the Texturepack .zip file in the Texturepack Folder
Step four: Download the newest Version of the mcpatcher (2.0 or higher is required for Beta 1.5 Texturepacks), leave everything checked and click on Patch.
Step five: Start Minecraft, let it patch and go to "Mods and Texturepacks" in the menu. Now choose your texturepack and enjoy your beautiful new Minecraft!
QUESTION: Which is your favourite Texture Pack & Mods?