Becomimg a Muslim it required that you testify before two witnesses that, There is no God except Allah and that Muhammad is the messenger of Allah. Once you become a Muslim you should implement all these though you should be gradual and gentle in your approach. The pillars are: Witnessing - Shahada, the five daily prayers - Salaat, Fasting in the month of Ramadan - Sawm, giving money in charity - Zakat, and lastly Pilgrimage to Mecca once in yout life - Hajj.