Welcome on turntoislam, i'am happy to show you how to become a muslim.
It's very easy.
You have to testify that there is no god worthy of worship except Allah and testify that Mohammad is His prophet and messenger. This is called Shahada--> Try to say this Shahada in arabic. Watch this video and repeat (like the child)
Shahada
[yt]yAfe6cgf1VA[/yt]
If you truly belief that there is no god worthy of worship except Allah and that Mohammad is His prophet and His messenger---> You are a muslim, you are my brother and brother of the whole islamic Uma
Allahu Akbar, Allahu akbar
If you have any question, please don't hesitate to ask
Thanks and take care,
Imad