The Body and Blood of Jesus Christ

During the Passover night, when He was betrayed, Jesus Christ introduced the new symbols of bread and wine. He said much about it, and much happened during the next day of Passover, which is very confusing to most people. Are we allowed to partake of the “communion” or the “Lord’s supper” at any time? Do the bread and the wine change on that occasion to the body and blood of Christ? Did Jesus say during the Passover night that He would eat no bread and drink no wine until His return to this earth? Exactly how did Jesus die on the cross? And in what way was His body broken, and what does this mean for us today?