How can I embrace Islam and perform prayers when I don't know the Arabic language, and must I change my name?

To embrace Islam, pronounce the Two Testimonies of Faith (Shahadatain) (in Arabic or English), then perform a ritual bath (ghusl) and pray the obligatory prayer of the current time. In the prayer, say "Allahu Akbar (God is Greater)" with each transition of movement, and say "Subhan Allah (Glory be to God), Al-hamdulillah (All praise is due to God), La ilaha illa Allah (There is no god but God), wa Allahu Akbar (and God is Greater)" while standing, bowing (ruku'), prostrating (sujood), and sitting. Then conclude with salutations (tasleem). There is no need to change your name, as Daniel is the name of a prophet.