This commercial set of multiple choice Organic Reaction Drills, available on the IBM PC's, is not very flashy, but you might find it useful in checking your mastery of individual reactions. Organic Reaction Mechanisms.
Many mechanisms also have an energy graph that runs simultaneously.
This program may help you conceptualize the overall mechanism process. If you have trouble picking up this vital skill from the Weeks workbook, I urge you to spend some time with PushMaster. Double-clicking on the PushMaster icon will open the HyperStudio player and launch the program. Please inform me of errors or difficulties in the program. However , there is no substitute for careful study and problem-solving with paper and pencil.