# CodeStudio > Placement preparation for Indian engineering students with DSA sheets, company interview guides, courses, and AI career tools. ## Practice and preparation - [DSA Practice](/dsa-practice): Curated coding problems with progress tracking. - [DSA Sheets](/dsa-sheets): Popular interview problem sheets organized by preparation timeline. - [Company Problems](/company-problems): Company-wise interview questions and preparation plans. - [Core CS](/core-cs): Operating systems, databases, networks, and OOP interview questions. - [Aptitude](/aptitude): Quantitative aptitude, logical reasoning, and verbal ability topics. - [Roadmaps](/roadmaps): Structured learning paths for technical careers. ## Courses and tools - [Premium Vault](/premium-vault): Structured placement courses and revision resources. - [AI Career Tools](/ai-tools): Mock interviews, resume review, and interview preparation. - [ATS Resume Tools](/ats-resumes): Resume templates and ATS checks for tech applications. ## Guides - [Placement Prep Blog](/blog): Practical guides for interviews, careers, DSA, and core CS. - [Interview Experiences](/interview-experience): Company interview rounds, questions and tips shared by students. - [About CodeStudio](/about-us): Information about the learning platform.