First of all, if you have made up your mind to go for civil services exam, stay determined and stand for your decision. Stay away from all negativity or pessimism.Now coming to how you should prepare. Get syllabus of the exam and read it thoroughly. Then do the following.Firstly, the golden rule to the IAS exam is to start with the basics and this is really very important. Start reading NCERT books of the prescribed syllabus such as History (old ncert), Geography, Civics etc. These will help you develop a basic understanding and clarity of the concepts. It will also lay a foundation for the advanced study. NEVER skip NCERTs, never!!!Secondly, develop a habit of reading newspaper. Any one good newspaper like The Hindu or Indian Express would do. This will help you get an overview of daily happenings and you would be able to relate things with your syllabus and exam pattern. Don't stress out on current affairs as most probably you would be appearing three years from now on. Just try to understand how things work in day to day life when it comes to Polity, Environment, Economics etc.Third, keep in mind the syllabus and exam pattern. Never study unnecessary stuff. It's more important what not to study than what to study. Don't just create a library at your home. Use study material wisely, and since it's your beginning, don't jump the gun. In enthusiasm to gather more knowledge, many freshers just buy books by tons. Avoid this.Fourth, use social media efficiently. Believe me from social media you can learn a lot provided you follow right track. Like pages of genuine newspapers like The Hindu, Down to Earth, preparation portals like Insights on India and Unacademy (avoid Zee News, Republic TV like non-informative pages). We open Facebook (assuming you didn't deactivate it after Cambridge Analytica scandal) many times in a day but we won't open the above mentioned sources more than twice a day to be honest. But on Facebook you can read things on the go and learn as well.This is enough for now. Many things will follow as you will go through the preparation.Best of luck. In case you follow this suggestion and crack IAS exam, mention me in your speech :)