All praise and thanks are due to Allah, and peace and blessings be upon His Messenger.
First of all, we’d like to welcome you to the fold of Islam, the true religion of Allah. In shaa’ Allah, after embracing Islam, you will find tranquility and peace of mind, for it’s Allah’s light to humanity.
“There is no need for a non-Muslim to know Arabic to revert to Islam. A large library of books have been written and/or translated (including the Qur’an) on Islam in many different languages. It is a good practice to learn Arabic to get a better grasp of the meaning of the Qur’an and the Prophet’s Hadiths. Your local Mosque will provide you with the necessary knowledge you may need on Islam.” (Source: Islamicity.com)
It goes without saying that non-Arab Muslims have to learn some Arabic words and sentences such as Surat Al-Fatiha so as to offer Prayer. This, of course, can be done gradually according to one’s capability.
The prominent Muslim scholar, Sheikh ibn Jibreen, a renowned Saudi scholar, states: “Non-Arab Muslims have to learn as much as they need for Islamic purposes, such as Takbir, Surat Al-Fatihah and At-Tasbihat – those that are obligatory in the Prayer and for other duties.”