Civil Servant (IAS/PCS) exams

Yes, you need a degree to appear for the exams you have mentioned. That degree maybe B.Tech, B.Pharma or any other.

Hi,
First and foremost thing, read the newspaper daily. I suggest you Hindu for that. Keep good memory of current affairs. You must know some important aspects of the constitution. Then choose a good coaching institute and work hard.

Maximum age to appear for civil services examination for general category candidates is 32 years with 6 chances as maximum. If you have not availed your chances yet then you are eligible to appear for civil services examination.

You are eligible to appear for civil services examination conducted by UPSC after completing B.Sc CS to become Indian Foreign Service Officer. You are not eligible for Indian Forest Service, unless you have cleared with one of the subjects named animal husbandry, physics, statistics and zoology, agr

Bajiram and Ravi is the best.

You need hard work, dedication and preparations. You will get assistance from institutes such as:
1. Elite academy.
2. Brilliant tutorials.
3. Rau's IAS, etc.
Besides, you can read national dailies and current event magazines to update your GK. The coaching manuals are available at leading book stalls.

Yes, any recognized graduation degree will make you eligible for civil services examinations.

It depends upon your ability, preparation strategy and many other factors. There are some other IAS also, who got in 2 to 4 attempts because they were doing job at the same time.

In 2015, out of 1750, the cut off marks for the Mains was 678 for the general category, which is 38.74 percent.
In 2014, the cut off for the general category was 678 out of 1750 that is 38.74 percent.
This was sharp increase from 2013, when the cut off marks was 562 out of 1750 that is 32.1 percent.

You can try online coaching, as the class will be at your door step and you need not to spend money and time in commuting, relocating, etc.
You can check the below mentioned link:
https://www.wiziq.com/courses/search.aspx?qry=IAS coaching