They are waiting for a military/political leader who will unite Jews, rebuild the temple, reclaim the promised land and bring God's Kingdom on earth.
Of course Jesus did all of these things but they are expecting these things as literal things, for example a literal temple made of stone rather than the temple of flesh in Jesus' body.
They quote things like Isaiah's description of the messiah as not pointing to Jesus but to the whole nation of Israel. They deny the ressurection point blank, just as the Bible states:
Here are two links worth reading, they have book references for further study.
This link is a Jewish website which claims Jesus is *NOT* the messiah:
http://www.jewsforjudaism.com/
This link is another website from Jews (or so it seems) who claim Jesus *IS* the messiah:
http://www.jewsforjesus.com/
I also recommend Josh McDowell's book "The new evidence that demands a verdict". He is a protestant author so keep that in mind
Happy studying!