Today is my first day of school. Today is Monday, however, we are free today; we don't have any class.
Now, I am faced with the future and what I will do. I am so confused .

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Here is an alternate way to write this:

Today is Monday.  It is my first day of school, but we don't have any classes!  

Now, I am contemplating the future and what I will do. I am so confused...

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Grammar point:  "We are free today; we don't have class."  This is an excellent example of when to use a semicolon (";").  In this example, you make two statements: "We are free today" and "we don't have class."  These two statements are closely related.  (We are free today BECAUSE we don't have class.)  Because these are both complete sentences AND they have a similar, related meaning, you may join them with a semicolon: "We are free today; we don't have class."

This is a confusing concept even for native English speakers, so please let me know if you have any questions!  :)

2014/2/24

Today is my first day of school. Today is Monday，Although we are free today, we don't have any classes.
I don't know what to do today. I am so confused .

2014/2/24

Although today, Monday, is my first day back at (of) school, there are no classes, so we have free time. Nowadays, I am faced with the question of my future employment. I am so confused .