Using the Topeak Alien II is super easy. Just break apart the two - piece body to access the tool you need. When you're done, put it back together for easy storage. To use a tool, simply take it out and apply it to the part you're working on. Remember, since it has so many functions, don't try to use more than one tool at a time. This can damage the tool or the bike part. For maintenance, keep it clean after each use. Wipe off any dirt or grease with a dry cloth. You can also use a little bit of lubricant on the moving parts to keep them working smoothly. Store it in the included nylon carry bag to protect it from scratches and keep it organized.