Basically, between Christian and Jewish faith is that both believe in the same God and basically the same past, and both believe in a messiah that will save the world - the main difference is that Christians believe that Jesus was the messiah, and Jews believe the messiah will be someone else who hasn't showed up yet.
Hope that helps - and wasn't too long!
@THEDARKDEATH222 Good question! Judaism and Christianity have the same beginning - the Old Testament and the Torah are very similar. Jesus was in his own lifetime called (often, sadly, in scorn) the King of the Jews. Christian faith says that Jesus didn't come to destroy the Hebrew faith, but to complete it. Christianity takes away some of the more strenuous Jewish laws and opens up a very similar faith to more people.