Hi Michel

You can find lots of MS Access tutorials if you do a simple search. But to make an MRP system, you'll first need to define exactly what all you need to include in your system ex. What tables should contain what kind of information.

If you are fairly knowledgeable with database relations (RDBMS), then the tutorial would bring you up to speed quite quickly.

If not, you're probably better off asking an expert to build an MRP system for you. HTH.