Witr and Nawaafil

Q: I usually pray two rakaats sitting after witr since this was the practise of the Prophet (Sallallahu Alyhi Wasallam). However, I now came across a Hadith saying that the Prophet (Sallallahu Alayhi Wasallam) didn't do these rakats 100% sitting, rather he stood up before ruku and made the ruku from a standing position. Can you please advice how to perform the two rakats. The hadith is: “He observed thirteen rak'ahs (in the night prayer). He observed eight rak'ahs and would then observe Witr and then observe two rak'ahs sitting, and when he wanted to bow he stood up and then bowed down, and then observed two rak'ahs in between the Adhaan and lqama of the dawn prayer.” (Sahih Muslim)

Q: Can we offer Tahajjud Salaah after we have offered our Witr Wajib or we should not offer our Witr Wajib before Tahajjud?

Q: A person is faced with some aspect that needs a decision, or some haajaat. He makes dua. Someone asks him if he read two rakaats salaatul istikhara /haajaat to fulfil his need? He says that I made dua. How does one reply to this, how to give targheeb to him that the salaah and then the dua will be more effective?

Q: Could one do istikhaarah to find out what happened in the past in someone's life such as husband's life before marriage?

Q: Will I receive the reward of tahaujjd if I perform nafil Salaah after esha before retiring to bed with the intention of tahajjud?

Q: What is the procedure for reading 4 rakaats of nafil Salaah? After two rakaats, one will sit in qa'dah. Does one have to read till the end of tashahud only or read Durood shareef etc then stand up? In the second two rakaats will one recite Surah fatiha and a Surah or only Surah fatiha?

Q: Whatever we pray after tahajjud, is our prayer accepted? What are the benefits of tahajjud prayer?

Q: According to the Hanafi Mazhab is it better to perform nawaafil in the home or musjid?

Q: Should one read Bismillah Hir Rahmanir Rahim before reciting Duaa-e-Qunoot in the Witr Salaah?

Q: A mosque in Durban encourages Salatul Tasbeeh during holy/auspicious days and nights etc. I am familiar with the blessed status of salatut tasbeeh and its importance. The people are encouraged to read in the mosque and the imaam or some person counts the tasbeehs for them. He is not in salaah. Is this permissible?