WordPress.org

1. Copy the daikos-text-widget folder to your /wp-content/plugins/ folder

2. Activate the Daiko's Text Widget on your plugin-page.

3. Drag the Daiko's Text Widget to your sidebar and add your own content including php code if needed. Optionally specify whether to display only on home, pages, posts, posts in category (-ies) or category archives. Specify even more if you like with slug/ID/title.

Good Luck!