This online resource library can answer most of the questions you might have. The library offers manuals, photos, videos and other useful information to help solve your issues and is organized by topic for quick referencing.
Simply select a category from the list on the lower right column. You can see the subcategories if you click on the arrows to the right of your category.
I want to change the gearing on my internally geared hub
This video shows you how to remove (and reinstall) a cog (standard or Carbon Belt Drive) from your Shimano Alfine 11 internally geared rear hub. The video shows the step by step process. The procedure requires a set of spreaders or circlip tool and a flat head screw driver. The total elapsed time of the procedure can be between 5-10 minutes, however it should be warned that removing the circlip could take longer and be a somewhat frustrating process.