If one fears that they may sin by looking at pornography what precautions can they take to prevent it especially in situations when they are alone or when they are going to sleep?

It is not permissible to watch them.

I know that it is not permissible to watch them, but I would like to know how to prevent oneself from watching it especially when alone or when going to sleep?

Do wudhu before you sleep
And read 3 times ayatul Kursi and think about death and day of judgment. And Try to be in the company of pious people

I have bought some markers that are used in coloring drawings. The marker says that the ink it contains is alcoholic(for better effect). My question is: Is the alcoholic marker's ink, considered to be same like alcohol? If it so, then second question: Is it haram or najis if the ink somehow get into my mouth and i swallow it or something like this happen?

it's pak.

Can I ride bike in India of I don't have licence? I have to travel with my mom also sometimes on bike I know Ayatollah Sistani advised to follow country's rules but If I am riding bike right now will it be Haram?

please follow your country rules .

My question is how do we keep up with eating food from Muslim vendors in today's world. the fact if the matter is that it is hard to refrain since we are a minority and it is understood by other sects since they relate to it easily

bahut tough hai.
par Allah ka ajr bhi hai .

jab najasat ka yaqeen ho to nahi istemal kar sakte .

Can we eat railway food in train

If that is pak then u can eat .

I work for a tv channel which also invests in movies in the systems and practices department, I wanted to ask you if income from such a company is halal.

not permitted.

Agha mera sawal ye hai ki western toilet hai agar kahi jaha hum job kar rhe office me aur ghar me bhi, to is toilet ke ke liye kya hukm hai ?
Kya jitni martaba peshab ya pakahana karenge, utni martaba nahana padega, bina nahahye paak mana jayega ya nahi ?

sirf jo jagah najis ho jaye use pak karna hai .
nahana nahi hai .

Kya mein ek loan dene wali company mein kaam karsakte hai mein

han
magar intrest se salary nahi le sakte .

Jis ladki se meri mangni (engagement) hone wali hai.... Kya usse mai engagement ke pehle phone pe ya whatsapp pe baat kar sakta hu?

shadi ke bad Inshallah.

Fitrah kis cheez pe adah karna chahiye? Kya fitrah Eggs ya Non-Veg ( Chicken- Mutton) pe adah kar sakte hai agar wo zyada istemal hota ho?

nahi
Genhu ya Chawal par nikalein.