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1. (Optional) Edit the values in the advanced-cache.php file (define...) for your convenience (further information in that file).
2. Create the cache directory /wp-cache/ in your WordPress directory (/wp-cache/) and make it writeable (chmod 777).
3. Upload 1blogcacher2.0.php file to /wp-content/plugins/ WordPress directory (/wp-content/plugins/1blogcacher2.0.php).
4. Upload advanced-cache.php file to /wp-content/ (/wp-content/advanced-cache.php).
5. Add this line to the wp-config.php file ("/wp-config.php"): define('WP_CACHE', true);
6. Activate the plugin and take a look to "Options > 1 Blog Cacher" in the WordPress panel.

That's all!