Salaah

Q: When a person feels dizzy, how should he perform namaz? It is very difficult to go into ruku or sajdah. What will be the right way of performing ruku and sajda?

Q: I moved to a city for studies (a 7 year program) but never made the intention to move there permanently. During the course of the studies I got married in the city. From then on I considered the city to be my (second) Watan al-Asli, since I thought that it automatically became my Watan al-Asli since it is my wife's Watan al-Asli, although I still had the intention to move back to my original home after the end of my studies (together with my wife). Is this correct? I.e. is it my Watan Asli due to it being my wife's watan asli, or is it not since I never intended to settle neither myself nor my wife there? If so, will it still be my wife's watan al-asli even though she intends to move away with me from the city after I finished my studies?

Q:

1. Zaid at times wasn't feeling well when praying his salah so he prayed with ishaara sitting on a chair, before the salah time expired he felt better, his condition was such that he could have prayed properly with sujood etc., is it compulsory for him to repeat the salah prayed with ishaara sitting on the chair?

2 a. Zaid is able to pray properly at home with Qiyaam and sujood etc. but when praying in the masjid he doesnt feel well, he feels dizzy, will his salah be valid if he prays in the masjid sitting on a chair with Ishaara?

2 b. In the above situation is it better for Zaid to pray five times salah and Jummah salah in the masjid with Ishaara sitting on a chair or pray at home with Qiyaam and sujood etc.?

Q: Is it permissible to combine 2 prayers? Meaning, is it permissible to pray zuhr and asr during the time for zuhr? or pray zuhr and asr during the time for asr?

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: Is it permissible to recite duas that appear in the Quraan in Sujood? Such as

رَبَّنَا آتِنَا فِي الدُّنْيَا حَسَنَةً وَفِي الآخِرَةِ حَسَنَةً وَقِنَا عَذَابَ النَّارِ

Q: I would like to know that when should we begin salaah with the imaam, after takbeer in namaz or before namaz. Can a person do itteba of imaam when he makes the niyat?

Q:

1. Is it permissible to pray behind an Imam who smokes?

2. Also, is it permissible to learn Quran from someone who smokes cigarettes?

Q: Is it permissible to perform salaah while having cigarettes and currency (since they have picture on them) in one's pocket?

Q: Could you please advise me on some english books and some guidelines on how to perfect your salaah to the highest level?