B.Com

Yes of course it's a co-ed college.
Anyone can join it.

For B.Com Hons. You need Maths.
Else, even science students can do B.Com. There is no requirement for commerce as such.

They provide a maximum package of INR 2.8 LPA. Nowadays, there are very less number of colleges that provides good placements, so I will prefer don't depend on them.

University of Mumbai
SVKM's Mithabai College of Arts
K. J. Somaiya College of Arts and Commerce
Kishinchand Chellaram College
St. Xaviers College.

Yes, you can from open learning or distance learning.

Deen dayal upadhyay gorakhpur university is best for you
It's a well known university of Uttar pardesh. Students who aim to apply for Deen Dayal Upadhyaya Gorakhpur University course admissions have to fulfil the eligibility criteria and should clear the entrance exam for some courses. The DDU Gorakhpur University admission process for programme taken by online.

The fee structure at Shree Raghavendra Arts and Science college is average INR 37500 annually so just go for it as it has good infrastructure.

Hey Tanveer, the fee structure at Jeevandeep Mahavidyalaya for b.com is INR 29850 per semester. So the fees for full course is INR 1.19 Lakhs

You need to study general awareness, Quantitative Aptitude English reasoning for the railway exams. Every year railways opens recruitments for different posts. You can check your eligibility and apply accordingly.

You can refer to several YouTube channels as well as their is abundant material available at Google. Telegram also contains many channels which help in assignments and studies.