The bar or bat mitzvah celebrates a Jewish child becoming a young adult who Jewish tradition holds to be responsible for his or her own actions. One of the central actions that requires adult standing is leading a Jewish service, and a traditional way to celebrate becoming bar mitzvah is for the new young adult to lead at least part of a service. Since Jewish services include large numbers of Hebrew prayers, a major part of the child's preparation involves learning Hebrew. Typical Hebrew/religious School curricula involve 6 hours per week of instruction during the school year for several years prior to the bar mitzvah -- this is supplemental instruction above and beyond the normal public school curriculum. It is worth noting that the Hebrew text in elementary primers and in the prayerbook is always printed with vowels, but that these are a recent (Greek) innovation an the traditional Torah scroll handwritten on parchment is written with out vowels. Furthermore, Torah is chanted with a melody that is tied to the grammar of the text. This is quite a bit for a child to learn.
They have Bar Mitzvah ceremonies for boys & Bat Mitzvah ceremonies for girls.
Studying for a Bar Mitzvah celebration usually takes about a year.
Judaism
Yes.
usually the temple
Yes; bat mitzvah is for girls.
13 years old.
Jewish boys have a Bar Mitzvah at 13 years as a rite of passage.
put on tefillin go through puberty
Boys celebrate Bar Mitzvah's and girls celbrate Bat Mitzvah's.
For newborns: Brit Milah for boys; Zeved Habat for girls; At age 3 years (In Chassidim) Upsherins for boys; First Shabbat candle lighting for girls. For Teens; Bar Mitzvah for boys; Bat Mitzvah for girls. Marriage.
The literal meaning of bar mitzvah is "The age of law", which means that from this age on the young adult is obligated in all the laws of Judaism. For boys this is the age of 13 (bar mitzvah) and for girls 12 (bas mitzvah).