Method of Salaah

Q: Is ayatul kursi supposed to be recited after the fard rakats or the whole salaah?

Q: When praying, I usually go through it fast and I don't feel a connection with anything. What can I do to feel connected to Salaah. I don't know. Please help to make me connected to Salaah.

Q: Will my Salaah be valid if I omit the dua and end with durood-e-ebrahim?

Q: What should the Imam recite in the thrid rakaat of Maghrib salaah?

Q: My question is what do we recite behind the Imam in the third rakaat of Maghrib and third and fourth rakaat of esha and dhur and asr. 

Q: I recently led the jamaat for zuhr salaah and for some reason I have doubts and cannot recall if I read the same surah in the 1st and 2nd rakaat (after surah faatiha). I don't know the two gentleman that read behind me. What should I do to rectify this? What if I cannot find them?

Q: I work on a coal mine, where the roof is not high enough to allow one to stand up straight. We work morning shift for a week and night shift the next week. Dhuhr is delayed until returning to surface when working morning shift, however salaah is performed underground when working afternoon shift. As one is required to stand upright, is it required to a) sit and pray (and then repeat the parayer when on surface) or b) stand and pray (even though one stands slightly crouched)?

Q: When I perform my Salaah alone (e.g. when I am ill), then do I have to perform my fardh Salaah in a loud voice?

Q: I would like to know the correct procedure of salaam at the end of Salaah. Is it Assalamualaikum warahmatullah or Assalamualaikum only?

Q:

1. My question is what surahs are the best to be read in witr? (I am referring to a Hanafi Madhad) Which or what surah is the best to recite in the first rakah, second rakah and in the last rakah.

2. Also is it permissible to perform one rakah witr after praying isha? And also is it permissible to perform 1 rakah witr in the dawn?