The Jesus Seminar was a gaggle of liberal theologians who cast beads for which scriptures they personally found palatable. They had an a priori, anti-supernatural bias. They also tended to diss contemporary evidences for Jesus - late-dating the Gospel authors, etc. If they were an important basis for discerning the historical truths of Jesus Christ and his disciples, etc., then you were cheated.
The historical accounts of the life, teachings, death, and resurrection of Jesus were more comprehensive than a great majority of ancient historical figures.
Have you read these books? They have a wealth of evidence for the historical Jesus.
"The Historical Jesus," by scholar Dr. Gary Habermas;
"New Evidence that Demands a Verdict," by former skeptic Josh McDowell;
"Baker Encyclopedia of Christian Apologetics," by Dr. Norman Geisler;
"The Case for Christ," by Lee Strobel," and
"The Case for the Resurrection of Jesus," by Dr, Gary Habermas.