What is known about the historical life of jesus? how is it similar to and diffrent from jesus?

Honestly, there are so many details regarding Jesus but I state some:

In historical life, Jesus lived on earth as man being a son of Mary and Joseph but in the gospels, Jesus Christ did not begin life here on earth. He himself spoke of his prehuman heavenly life. (Joh 3:13; 6:38, 62; 8:23, 42, 58) John 1:1, 2 gives the heavenly name of the one who became Jesus, saying: “In the beginning the Word [Gr., Lo′gos] was, and the Word was with God, and the Word was a god. This one was in the beginning with God.” Since Jehovah is eternal and had no beginning (Ps 90:2; Re 15:3), the Word’s being with God from “the beginning” must here refer to the beginning of Jehovah’s creative works. This is confirmed by other texts identifying Jesus as “the firstborn of all creation,” “the beginning of the creation by God.” (Col 1:15; Re 1:1; 3:14) Thus the Scriptures identify the Word (Jesus in his prehuman existence) as God’s first creation, his firstborn Son.

If the estimates of modern-day scientists as to the age of the physical universe are anywhere near correct, Jesus’ existence as a spirit creature began thousands of millions of years prior to the creation of the first human. (Compare Mic 5:2.) This firstborn spirit Son was used by his Father in the creation of all other things. (Joh 1:3; Col 1:16, 17)

Time of Birth, Length of Ministry. Jesus evidently was born in the month of Ethanim (September-October) of the year 2 B.C.E., was baptized about the same time of the year in 29 C.E., and died about 3:00 p.m. on Friday, the 14th day of the spring month of Nisan (March-April), 33 C.E. The basis for these dates is as follows:
Jesus was born approximately six months after the birth of his relative John (the Baptizer), during the rule of Roman Emperor Caesar Augustus (31 B.C.E.–14 C.E.) and the Syrian governorship of Quirinius, and toward the close of the reign of Herod the Great over Judea.—Mt 2:1, 13, 20-22; Lu 1:24-31, 36; 2:1, 2, 7.

Time of his death. The death of Jesus Christ took place in the spring, on the Passover Day, Nisan (or Abib) 14, according to the Jewish calendar. (Mt 26:2; Joh 13:1-3; Ex 12:1-6; 13:4) That year the Passover occurred on the sixth day of the week (counted by the Jews as from sundown on Thursday to sundown on Friday). This is evident from John 19:31, which shows that the following day was “a great” sabbath. The day after Passover was always a sabbath, no matter on what day of the week it came. (Le 23:5-7) But when this special Sabbath coincided with the regular Sabbath (the seventh day of the week), it became “a great one.” So Jesus’ death took place on Friday, Nisan 14, by about 3:00 p.m.—Lu 23:44-46.

No basis for winter date of birth. The popular date of December 25 as the day of Jesus’ birth therefore has no basis in Scripture. As many reference works show, it stems from a pagan holiday. Regarding the origin for the celebration of the day December 25, the Jesuit scholar Urbanus Holzmeister wrote:
“Today it is commonly admitted that the occasion for the celebration of the day December 25 was the festival that the pagans were celebrating on this day. Petavius [French Jesuit scholar, 1583-1652] already has rightly observed that on December 25 was celebrated ‘the birthday of the unconquered sun.’
“Witnesses for this festival are: (a) The Calendar of Furius Dionysius Filocalus, composed in the year 354 [C.E.], in which it is noted: ‘December 25, the B(irthday) of the unconquered (Sun).’ (b) The calendar of astrologer Antiochus (composed about 200 [C.E.]): ‘Month of December . . . 25 . . . The birthday of the Sun; daylight increases.’ (c) Caesar Julian [Julian the Apostate, emperor 361-363 C.E.] recommended the games that were celebrated at the end of the year in honor of the sun, which was called ‘the unconquered sun.’”—Chronologia vitae Christi (Chronology of the Life of Christ), Pontificium Institutum Biblicum, Rome, 1933, p. 46.
Perhaps the most obvious evidence of the incorrectness of the December 25 date is the Scriptural fact that shepherds were in the fields tending their flocks on the night of Jesus’ birth. (Lu 2:8, 12) Already by the autumn month of Bul (October-November) the rainy season was starting (De 11:14), and flocks were brought into protected shelters at night. The next month, Chislev (the ninth month of the Jewish calendar, November-December), was a month of cold and rain (Jer 36:22; Ezr 10:9, 13), and Tebeth (December-January) saw the lowest temperatures of the year, with occasional snows in the highlands area. The presence of shepherds in the fields at night therefore harmonizes with the evidence pointing to the early autumn month of Ethanim as the time of Jesus’ birth.
Also weighing against a December date is that it would be most unlikely for the Roman emperor to choose such a wintry, rainy month as the time for his Jewish subjects (often rebellious) to travel “each one to his own city” to be registered.—Lu 2:1-3; compare Mt 24:20;

For more info: http://wol.jw.org/en/wol/d/r1/lp-e/1200002451?q=jesus&p=par