2000 Dodge Caravan engine light came one

Who gave you these codes, there is a sentence, with these numbers that tells you exact information, the OBD connector has one set, for emissions related faults, the Chrysler codes are more exact,
either one should start with a P and then have 3 or 4 numbers, like 1775 or 0753, see if you can write down exactly what those numbers are, they are very important, what problems are you having?
Take it slow, use a scanner, write them down then post a question, if you plan on fixing any newer car you will need this type of information and tools, all are available pretty cheap now, check the store, ok?