Happy things

I was so excited that I got up early this morning, because my driving license will arrive today.  I'am I'm [1] going to go [2] home from my university tomorrow [3].  My college is in Hefei that which is too far from Beijing.  Althrough I have to spend four hours of boredom on the train, I expect that I will drive my car when I will get home.

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[1] You have the contraction wrong.  You can start in either of the following ways:

"I am going to go home."

"I'm going to go home."

[2] Writing "going to go" is a little awkward.  Either of the following would be better, depending on how certain you are that you will go home.

"I am going home."

"I am planning to go home."

[3] Because you are talking about returning tomorrow, it is better to write, "I will" (future) rather than "I am" (current).  Please compare these two sentences:

"I am going home from university today."

"I will go home from university tomorrow."

Add a space (' ') after every comma (',') and full stop ('.').

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Congratulations on receiving your driving license.  Please drive carefully.