Anyone who has any question/s about Islam (what it is etc) please feel free to ask. I'll try my best to answer you question in the simplest form.
The Five Basic Principle of Islam (Pillars of Islam)
To be a muslim, we first declare (only once) that there is no Gob But One God. Thereafter the remaining four principles basically make you a complete Muslim.
1. Pray five times a day (right before sun rise, midday, evening, sun-set & before going to bed)
2. Give Charity
3. Fast during the month of Ramadan (29-30 days) every lunar (360 days) year
For those who are healthy and financially capable of travelling to Mecca, Hajj (pilgrimage) is mandantory (once in a life time).