salaah

Q: I made a mistake in one of the prayers but forgot to do sajdah sahw and got up. Later I remembered and then repeated the prayer. Should I perform sajdah sahw in the repeated prayer? 

Q: If a husband and wife would like to peform jamaat salaah at home, would they stand just like how two people would normally stand?

Q:

1. Suppose I am offering Asar or Maghrib and I joined the Namaz in the last Rakaat after missing the first three rakats, now when the prayer ends with "Assalaamu alaikum warahmatullah" by Imam and I get up from "Attahiyyaat", Then what do I have to say first? Do I have to start my next rakat with thana or bismillah?

2. Also, do I have to say a surat after reciting surah fatiha?

Q: Can I pray the five Salah at home as I am a student and don't have enough time to go to Masjid and pray with the Jamat. Kindly guide me with this...

Q: If I completed my salah and forgot to do sajda sahw, how to do it after salah? After salam if I sit and recite attahiyaat and say salam on the right side and do two sajdah and say salam to both sides. Is it the correct way? 

Q: My question is that, if a person deliberately left many prayers (namaz) then how can he complete them?

Q: If I am offering prayers alone then can I read qirat (reciting Holy Quran) in a loud voice? If there is no person except me.

Q:

1. What is the status of reciting consecutive Surahs in fardh salaat? For example, reciting Surah Ikhlaas in the first rakaat and Surah Falaq in the second rakaat?

2. In fardh salaah, it makrooh to intentionally recite Surah Ikhlaas in the first rakaat and Surah Naas in the second rakaat?

3. In Witr salaah, what is the status of reciting Surah Ikhlaas in the first rakaat, Surah Falaq in the second rakaat, and Surah Naas in the third rakaat?

4. What are the two shortest Surahs that can be read in the first and second rakaat of fardh salaah?

Q: I have accepted Islam by saying the shahadah only. I want to practice Islam completely but I am not able to get in it because my family is against Islam very strictly. If I tell them about it, they will not think twice about killing me. I am not scared of dying, my fear is about this that I have not been able to perform salah and I am unable to do such things which are farz for a Muslim. If I died like this, then Allah will punish me alot, this is the reason, I fear death. I tried to explain to my household that they should abandon idol worship, but they became very angry and I did not tell them further about Islam. I am trying to change them for the last 1 year but nothing has happened till now and I have to go to the temples even though I don't want to go with them to do some Hindu rituals. I have some questions for you:

1. Is it justified to leave the house because of this condition for me?

2. I have heard that any person who says "Subhna Allahu wa Bihamdihi" 100 times a day, all his sins will be forgiven?

3. If I die here accidently, before leaving my family, without completely getting in to Islam, will Allah forgive me?

4. According to you, what should I do at this point in my life?

You are welcome if you want to give me more advices regarding to my life.