Hello,

If you're asking this question specifically in regards to any entrance exam, then stick to the syllabus which will precisely describe what to read and what to skip, the editorials part of The Hindu is very important from the point of view of any exam, in fact in quite a few exams in recent times in English sections, RCs from the Hindu were directly taken, other than this this also build up your vocabulary, say for instance you're preparing for UPSC, then focus on editorials, government schemes, economics, science and technology news etc, in banking the focus should be more on business, banking related news, also it's good you follow another business newspaper along with The Hindu, stay from news that involves politics, local news that hold no relevance, once you read the headlines you can easily get to know if it's relevant to your preparation, after all it does take enough time, and practice after which you can only increase your speed of reading especially if I talk about the editorials part which are written by prolific writers, and involve vocabulary that are not used normal day to day life,