Begin by saying the following prayer each evening of the count:
BA-RUCH A-TAH YHWH E-LO-HE-NU ME-LECH HA-OLAM ASHER KID-E-SHA-NU BE-MITZ-VO-TAV VETZI-VA-NU AL SEFI-RAT HA-OMER
Blessed are You, YHWH our Elohim, King of the Universe, who has sanctified us with His commandments, and commanded us concerning the counting of the Omer.
Ha-yom sh’losha asar yom, shehaym shavu-a echad v’shisha yamim la-omer
Today is thirteen days, which are one week and six days of the Omer