Zikr & Dua

Q: What is the meaning of the 99 names of Allah and when we do recite it what will be the effect on us if we abundantly recite any name of Allah?

Q: I have a question regarding the reading of Dua-e-gunjul Arsh, Ahad Nama, Durood-e-Taaj, Durood-e-Mahi, durood-e-lakhi, Durood-e-Tunjina, Durood-e-Taaj, can all be recited?  Please Advise.

Q: What is the meaning of ya wadudu?

Q: Can we (muslims) pray for a Hindu? Like may Allah give him progress? O can we only pray for his hidayat not other than that?

Q: People take bayat/pledge to a Shaykh and there is a system of Tasbih 6, 12 and on and on but there is Hadith in Tabarani that Amar ibn Salama (Radiyallahu Anhu) said that we were at the home of Abdullah ibn Masud in between Magrib and Esha and in the mean time Abu Musa (Radiyallahu Anhu) came and said I saw a matter that terrified me, some people have came into the Masjid one of them said  recite subhanallah alhamdulillah. Then Abdullah (Radiyallahu Anhu) came to the Masjid and said to them you have deviated. In another Hadith in Abunuayim that Abdullah ibn Jubair (Radiyallahu Anhu)  has reported by his son that some people came in Masjid and in the time of dikr they fell to the ground then he said to his son do not meet with them.

From this I understand that this type of tasbih was not there in the time of sahaba (Radiyallahu Anhum). So what is the truth?

Q: Dua when looking in to a mirror is it Allahumma anta hassanta kalqi fahassin koloqi or is it Allahumma hassanta kalqi fahassin koloqi without Anta after Allahumma please provide reference from Hadith?

Q: 

1. Please clarify if the dua for eating has wa ala barakatillah or if it is just wa barakatillah without ala, which one is Sunnah and rewarding?
2. The dua after eating is it wajaalana minal muslimeen or wajaalana muslimeen, which one is Sunnah and rewarding?

​Please write the duas in Arabic with Harakat and reference from Hadith.

Q: Can one seek the help of angels thinking that if they are nearby they can help?

Q: When are the best times to read Hizbul Bahr and Hizbul Nasr? Who can give me permission to read them?