Wa Alaykum Assalam sister Nilufar,
Welcome to the forum. I am very glad that you found Islam, and all praise is for Allah the Most Exalted.
It is also very good that you are learning how to pray, which is a pillar of Islam and very important. Keep trying and learn step by step, and you will get there In sha Allah.
There are a number of online resources for people who are learning how to pray. You can watch the prayer from start to finish, and also listen to what is recited during each part of the prayer. Here are a couple but they might not be perfect. You can use them to get a basic idea.
http://en.islamway.net/flash/287
http://www.youtube.com/watch?v=GHdOSjmNTL4
Try to get in touch with Muslims around you who can teach you. The things you find online might differ slightly so it's good to have someone help and guide you from the beginning. Also try searching for other threads in this section of the forum (where I have moved your thread) or have a look at the Prayer section of the forum, where you might find some more helpful tips :ia:.