How do we pronounce a letter that has a connecting hamza?

Question
salamu  alaykum,pls how do we pronounce a letter that has a connecting hamza:that is, do we start with fatha, dhammah, or kasrah when it is not accompanied with any harakah at the beginning of the ayat?
Answer
Wa alaikum assalaam wa rahmatullahi wa barakaatuh
To be able to begin a word which has a hamzah al-wasl at the beginning you first need to determine if ti is a verb, a noun, or a harf (part of speech).  After that we can figure out the vowel we use to start the word.
Please see the following link  with the eight  lessons on hamzah al-wasl so you can learn how to determine the vowel starting the word which begins with hamzah al-wasl.  This link may change to a different link name soon, but for now pls use:
http://www.abouttajweed.com/index.php/tajweed-rules/56-hamzah-al-wasl