Preparing for each subject or section as per the syllabus for the IBPS RRB PO Exam requires a systematic and focused approach. Here are some guidance and suggestions to help you prepare effectively:

1. Quantitative Aptitude:
- Understand the syllabus: Familiarize yourself with the topics included in the syllabus, such as number system, simplification, data interpretation, etc.
- Study the basics: Strengthen your understanding of fundamental concepts and formulas related to arithmetic, algebra, and geometry.
- Practice regularly: Solve a variety of quantitative aptitude questions from previous year question papers and mock tests to enhance your problem-solving skills and time management.
- Analyze your performance: After each practice session, evaluate your performance to identify your strengths and weaknesses. Focus on improving weaker areas.
- Learn shortcuts and tricks: Learn and practice shortcuts and tricks to solve problems quickly and accurately.
- Utilize online resources: Utilize online platforms like EduRev for accessing study materials, video lectures, and practice tests.

2. Reasoning Ability:
- Know the syllabus: Get acquainted with the different topics included in the syllabus, such as puzzles, seating arrangement, coding-decoding, etc.
- Develop logical thinking: Enhance your logical reasoning skills by regularly solving puzzles, riddles, and logical reasoning questions.
- Practice with previous year papers: Solve previous year question papers and mock tests to understand the patterns and types of questions asked.
- Time management: Work on improving your speed and accuracy by setting time limits for each question during practice sessions.
- Stay updated: Keep yourself updated with the latest news and current affairs as questions related to these topics are often asked in reasoning sections.

3. English Language:
- Understand the syllabus: Know the topics covered in the syllabus, such as comprehension, grammar, vocabulary, etc.
- Enhance vocabulary: Read newspapers, magazines, and books to improve your vocabulary. Make a list of new words and revise them regularly.
- Grammar practice: Brush up on your grammar skills by studying the rules of tenses, parts of speech, sentence structure, etc.
- Comprehension practice: Read a variety of passages and practice answering questions based on them to improve your reading comprehension skills.
- Practice writing: Practice writing essays, letters, and precis to improve your writing skills.
- Take mock tests: Solve mock tests and sample papers to get familiar with the exam pattern and improve your speed and accuracy.

Remember to create a study timetable, stay disciplined, and revise regularly. Mock tests and previous year papers are crucial for assessing your preparation level and identifying areas that need improvement. Utilize EduRev and other online resources for comprehensive study materials and practice tests.