Zikr & Dua

Q: Is it okay to make tasbeehaat, Quran Tilawat, and durood from the heart? Is the virtue the same as making tasbeehaat and durood aloud?

Q: My question has two parts. I say a few tasbeeh at night after esha but when I am late I take the tasbeeh to bed and do it while lying down. Is it okay? Second part of the question is during the day when I leave for office I say subhanallah or alhandullilah or etc but at time on the way I break wudhu, so is it okay to continue?

Q: Can you please recommend me books on the subject of Durood that I should get? I am trying to start zikr gatherings on the topic of only duroods. I currently have Fazail Durood, Nearest Approach To The Messenger Of Allah.

Q: I heard that using a tasbeeh is bid'ah, is this true?

Q: I just want to know if loud zikr in a congregation is permissible because some say it is and some say it's bida. Please give me an explanation. Didn't our beloved prophet (Sallallahu Alayhi Wasallam) or those around him practice this kind of zikr?

Q: Can I make dua for things I want in Jannah? Please don't say first get there then ask for things. I know that but I want to ask now before I die.

Q: Is this durood reported in the hadith-"Sallallahu 'alaa muhammadin swallallahu alaihi wasallam"? Do we get reward if we recite this darood?

Q: Is there any Sunnnah dua to be recited on sighting the full moon (i.e. on the fourteenth night of the month)?

Q: How is this dua? Please check it.

يا الهي! تجعلني سبيل المثال من شجرة تخرج من طور سيناء تنبت بالدهن وصبغ للآكلين.

Q: Is a person rewarded if he does zikr in his heart (without moving his tongue), or is it necessary for movement of the tongue in order to get rewarded for zikr?