Witr and Nawaafil

Q: Can Salatul Tasbeeh be read in 2 rakaats or does it have to be 4 rakaats?

Q: I wanted to know that if this come in “shirk” that i do istikhara just to know who my husband is? I just came across one method of this kinda istikhara and they gurantee you that you will see his/her face in dreams in 7 nights. I want to do it but i am quite afraid of committing any sort of shirk.. kindly make me clear

Q: If someone is leading a congregation, for example Taraweeh. Does the imam need to say بسم الله الرحمن الرحيم after he finishes a surah and decides to continue? For example, if the Imam just finished Surah Baqarah and wants to continue to Al-Imran, does he stop after finishing and continue or does the Imam recite Tasmiyah and then continue to Al-Imran? Please clarify me on this.

Q: While reading the witr salaah and in the last rakaat if I forget to read the qunoot but remember when I go into ruku wat should be done?

Q: In Istikhara dua is it Faqdirhu Lee and Faqdir Liyal Khair with a kasra under the Daal or is it Faqdurhu Lee and Faqdur Liyal Khair with a Dhamma on the Daal?

In some kitaabs it is with a kasra under the Daal and others with a Dhamma on the Daal, are both correct and proven from Hadeeth, if not which one is correct according to Hadeeth and arabic grammer?

Q: I don't know the last durood that is read in last before salaam. What can I read inplace of that? I also don't know the dua in witr salaah. What should I do? 

Q: Can we make niyyat/intention for chaast/ishraaq/hajat/shukur/taubaa when performing salaatul tasbeeh?

Q: I would like to know if I can pray these 3 surahs in my tahajud salah; surah waqia, surah mulk and surah sajda because I pray out of salah so I can add them to my tahajud salah.

Q:

1. In Witr Salaah in the month of Ramadhan, if the masbooq joins the Imam in the ruku of the last rakat, is it wajib for the masbooq to recite dua e qunoot when he stands up to complete his missed rakat and in which rakat will he recite dua e qunoot?

2. In Witr Salaah, if the masbooq missed all the rakaats and did not recite dua e qunoot when he stood up to complete his Salaah, is it compulsory upon him to repeat the Witr Salaah after the Salaah time has expired?

3a. If the masbooq turned for salaam with the Imam accidentally or not knowing the masala and he did sajdah sahw at the end, is the Salaah valid?

3b. In the above situation, if he didn't do sajdah sahw, is it compulsory to repeat the Salaah when the Salaah time has expired or is the Salaah valid but incomplete?

4a. When the Imam did salaam to do sajdah sahw, the masbooq accidentally or not knowing the masala, he also turned his head for salaam and then did sajdah sahw at the end of the Salaah, is the Salaah valid?

4b. In the above situation, if he didn't do sajdah sahw, is it compulsory to repeat the Salaah when the Salaah time has expired or is the Salaah valid but incomplete?

Q: I was offering the four rakat sunnat before zuhr in the mosque. I was offering the second rakat when the iqaamat started, so I completed my salah like a two rakah prayer to join the jamaat. Will I have to offer the sunnat again after zuhr or is it permissible to skip it? And also should I do sajdah sahw when I repeat the sunnah to after the jamaat?