I have found that visual layouts of information really help me learn and remember, so I have created a pretty flow diagram of how to conjugate any Japanese verb with hints as to what you can do with them afterwards. I wanted to squeeze in as much information as possible, so it also includes irregular verbs, adjective conjugations and lists of confusing verbs. Plus it all fits handily onto one sheet of A4. Note that it is more of an aid for revising what you have already learnt rather than an instruction for those who are just starting out!
Printing: A4 colour double-sided works best. Depending on your printer set-up, the "flip along short edge" will probably produce what you want.
Many thanks go to Antje Frotscher for her fine suggestions and technical help, and also to Misa Higashida and her family for their comments.
Further comments and corrections are welcome: japanese-at-cghq-dot-net