I am New on this platform. Tell me something about this platform. Thanks

Hey everyone! I'm Shahzaib, a final-year Software Engineering student from Pakistan. I'm a Flutter developer and the founder of a small software agency called ZaphTech Solutions, where we build websites, mobile apps, and AI-powered tools for small businesses. I'm new here on DEV. I joined for Hacktoberfest because I want to learn open-source AI and build with open-weight models — I'm working toward becoming a Generative AI Engineer. I'd love to hear from you: how does DEV work? Any tips for a beginner joining their first challenge? And what are you building this Hacktoberfest? Thanks for reading — looking forward to learning from this community!