Mazel Tov! My nephew Chaim Lemel started putting on tefillin!
A Jewish boy, upon reaching his 13th birthday, is regarded as a full fledged Jew. He then becomes a "Bar Mitzvah," meaning that he is begins to keep and perform all the laws and customs of the Jewish people. One of them is is Tefillin.
It is customary to initiate the boy into the practice of donning the Tefillin 2-3 months before the actual date of his Bar Mitzvah.
When purchasing a pair of Tefillin, care should be taken to buy it from a dependable store in order to be sure the Tefillin are hand-written by a duly qualified Scribe (sofer). Those not produced in conformity with the specified requirements of Tefillin, may not be used.
Tefillin is donned Sunday through Friday only.
Tefillin are worn during the morning prayers. However, if for some reason it was impossible to do so in the morning, Tefillin may still be put on later in the day, but not after sunset