Looking for tutorial on monitoring a set of contacts

Looking for tutorial on time and event logging/recording.

I hope this request isn't a bother but, hope this is a good place to post it. I would like to learn how to use the Arduino to monitor a set of contacts and then report when they are open or closed. The times need to be recorded and used in future calculations. This would be a good start for the project I have in mind. If you have any suggestions please send them along.

You will need a RTC to get the time and the contacts are treated the same as a basic switch.

Both of these are basics that have been covered many times. Do a search.

Weedpharma