Sayyed Mohammad Al-Musawi

'All our most knowledgeable Ulama (Maraaje' of Taqleed) say that marriage between Sayyeda believer and Nin Sayyed believer is allowed as we don't have in the authentic narrations from the Prophet (SAWA) and his Ahlul Bayt (AS) any evidence against it. They have long list if authentic narrations e.g. in Al-Kaafi , an authentic Hadeeths from Al-Hadhrami from imam Ja'far Al-Sadiq (AS) : The Prophet (SAWA) arranged the marriage between his first cousin sister Dhubaa'ah Bint Al-Zubair ibn Abdul Muttalib and Al-Miqdad ibn al-Aswad. This is a clear evidence that Miqdad ibn al-Aswad who was a Mo'min but non Sayyed was been helped by the Prophet himself (SAWA) to marry a Sayyeda Mo'mina who was the first cousin sister of the Prophet (SAWA).

We also have a Hadeeth in Al-Tahtheeb (number 1581) stating the same marriage between the Prophet;s real cousin sister and Miqdad ibn al-Aswad arranged by the Prophetvhimself (SAWA).

Wassalam.

1, Beware from the worst enemy Shaitan (Satan) who always tries to distance you from Allah and seek Allah's protection from the evil of Shaitan by repeating أعوذ بالله من الشيطان الرجيم

2. Keep on seeking from Allah and never lose hope in His Mercy and Grace.

3. Repeat Estighfaar especially at night when you are alone.

4. Repeat Salawaat as it opens the gates and treasures of every bounty in this world and hereafter.

5. Night Prayer (Salat Al-Layl or Namaz e Shab) is very important recommended prayer every night which makes you near to Allah and purifies our hearts.

6. Long Sojood (Prostration) makes you more near to Allah and more far from Shaitan.

7.  Seeking the Waseela (intercession) and Du'a if Imam Al-Mahdi (AS) is the best way to gain nearness to Allah (SWT).

Wassalam.

Using any type of sinful music is not permissible and money earned from that sinful act is also not allowed. Sinful music is the music which is usually used by sinners.

Wassalam.

Aqeeqa is recommended for every Muslim child on the seventh day after birth, and it can e be done any time after that by slaughtering a sheep or goat or cow or camel and distributing its meat to people.

Chilla has different meanings in different countries and cultures. Please clarify your question and which type of Chilla you are asking about, so that I can try to respond to it.

Wassalam.

Muslim wife must treat all the children of her husband including from other wives with justice and kindness with out any discrimination. Motherly rights are on her own children but children from other wives must keep the respect of the wives of their father. 
'Wassalam.

Direct communication with potential spouse must remain within the frame of Shariah as both of you are still Non Mahram to each other. Flirting or flirtation with a potential spouse remains Haraam till both of you enter in an Islamic contract Aqd which allows that. Chatting should never contain any emotional content before having a valid Aqd between you. If both if you want to meet, it should be in the presence of another person to avoid the Khalwah (private meeting) which is not permissible with out a valid Aqd.

Wassalam.

This narration is in Saheeh Muslim which is the second most authentic books of Hadeeth among our Sunni brothers, in which Umar ibn al-Khattab  himself told Abdullah ibn Abbas that : You and Ali looked at Abu Bakr as a liar, traitor, licentious, then looked at me as a liar, traitor, licentious.

This statement of Umar reflects the stand and opinion of Ali (AS) about Abu Bakr and Umar.

Wassalam.

The reward if praying in any Masjid is greater than the reward of praying at home. The reward of congregational prayer is much greater than praying alone.

Wassalam.

Wearing acrylic nails in your nails prevents water of Wudhu or Ghusl from reaching to your real nails, hence invalidates your Wudhu and Ghusl. If you wear it after performing Wudhu or Ghusl then pray Salah, your Salah will be valid because your Wudhu or Ghusl were valid as you performed Wudhu or Ghusl with out wearing anything stops water from reaching to your nails.

Wassalam.

Your adopted sister is not your real sister, so, you are not allowed to look at her unclothed. Hijab rules apply on you and her .

Emergency has got its own exceptions just like emergency rules to save life of any other female who is non Mahram to you.

Wassalam.

Welayat al-Faqeeh is an Islamic rule regarding the authorities of the Jurist being highly learned or the most learned in Islamic jurisprudence. These authorities are been discussed by great Shia scholars and all of them agree on the principle of the authorities if the jurist (Faqeeh) but there are different opinions on the extends if these authorities. 
'Wassalam.

Your previous prayers and fasts and worship are valid as far as your intention was for the sake of Allah, and you did not violate any basic rule of worship.

Taqleed is acting upon the verdicts if the most learned scholar (Al-A’lam) who is considered by the high caliber scholars in the Hawza who are known as Ahlul Khibra أهل الخبرة.

Switching should be to the most learned Al-A’lam.

Wassalam.