I have a tool cart with My high use tools on it, When I worked at the dealer, it was always right beside me so I didn't have to walk to My main box to grab a tool.
Keep a notebook to write things down . Information that you might use a lot. rather than having to search and look up information, keep notes in the notebook.
Learn the service information and where to find it. Most all of it is on computer nowdays. The faster you can find the info., the faster you can get the job done.
Try to maintain a good relationship with the older techs. They have a lot of experience. If they see that you really want to learn, most of the older guys are happy to pass on the knowledge that they have learned over the years.
Try to keep a good relationship with the parts guys. If you don't, they can cut your efficiency big time.
If the manufacturer of the cars you are working on has a web site for techs, join the site. there will be lots of good information on that site.