can you send me please the importance of learning tajweed with evidences from quran and sunnah and if you can guide me to a book in English regarding this subject .

Reciting Quran is a formal act of worship. It has to be done according to the way the Prophet pbuh used to recite.

Allah swt said, what means in English, (And recite the Quran in a pleasant tone and style)

 

   One of the good resources of Tajweed is the following:  http://www.abouttajweed.com