Witr and Nawaafil

Q: Which salaah sould be performed last, witr or tahajud? I've now heard that the last namaaz has to be witr.

Q: Kindly advise with regards to the following:

1. I woke up for fajr and there was only enough time to read my fardh. Can I read my sunnats after sunrise?
2. When I am a‎​ musaafir is it better for me to read my sunnats or not?
3. The two sunnatul muakadah after maghrib, is it part of awabeen or is awabeen 6 seperate rakaats?

Q: I know that it is a sunnah to read the last 2 nafl of esha salah seated. Should one always do this, or should it be done occasionally only? Does this apply to the nawafil of dhuhr and maghrib as well?

Q: In Ramadhaan, if we are only two people in an apartment, is it better for us to perform witr with jamaat or is it better for us to perform it individually? In other words, during the month of Ramadhaan, does performing witr with jamaat only apply to the situation where one is in the musjid or does it apply to all places?

Q: Is it Sunnah to sit and read the last two nafl rakaats of esha?

Q: After the Esha Salaah, when the musallees had already performed their witr salaah, the Imaam made an announcement that the salaah had to be repeated as he did not have wudhu.

1. Should the 2 sunnah and witr salaah also be repeated again?

2. If nafl salaah was performed, should that also be repeated?

Q: Can a person read any nafl or qaada when tahajud time end before the fajr azaan.

Q: My question relates to the times of Tahajud. When i was in madressah I was taught that we could read from just after 12am till about 15min before fajar salah. Recently I was told many different things regarding the times. What would be the right time to read Tahajud salah and the cut off time?

Q: I would like to know if it is permissible to recite Salaatul Istikhara even if you only intend on marrying the desired person after a couple of years. I have heard that after reading the Salaah then nikaah should not be delayed. Please can you also tell me more about the Salaatul Istikhara that is read on a persons behalf, also what are the conditions of that Salaah?

Q: An Imaam performed twenty rakaats Taraaweeh during the month of Ramadhaan. This Imaam stood up for the third rakaat without performing tashahhud. He completed the salaah by performing four rakaats. Is the Taraaweeh salaah valid if performed in sets of four or six rakaats?