Giving up sins

Q: I need some help. I'm 23 years of age and from a conservative Muslim minority. My problem started when I was younger and I was introduced to porn movies and masturbation. I need your advice.

Reciting from different surahs in salaah

Q: In one musjid, the Imam Saheb read in the first rakaat of Fajr Salaah from the middle of Surah Tahreem,

يا أيها الذين آمنوا قوا أنفسكم و اهليكم

till the end of the Surah. Then in the second rakaat he read a different surah. Is there any reason for doing so? Would it not be better to start at the beginning of the Surah, read 2 pages, then in the second rakaat finish off the Surah?

Gambling

Q: What is the shari ruling on gambling. Is it actually mentioned in Surah Baqarah that it has some benefit for men?

Choosing a silsila for bay'at

Q: How is the Naqshbandi Owasia silsila for bay'at e tasawwuf? The current sheikh is Abdul Kadir Awan MZA who is the son of Hazrat Ameer Akram Awan ra.

This silsila claims that

- A Sheikh e kamil must able to take you in the court of Prophet (sallallahu alaihi wasallam) and make Ruhani bay'at with Prophet (sallallahu alaihi wasallam).

- This silsila is the only true silsila who is connected to darbar e nabawi (sallallahu alaihi wasallam).

- They claim to get benefit from a person in barzakh and the grave.

How is this silsila for bay'at?