docs: overhaul daily-reading section with deep-dive guides

- merged newsletter.md and substack.md into newsletters.md
- created engineering_blogs.md with Hall of Fame list
- created must_read_books.md (Beginner to Advanced)
- created aggregators.md (Hacker News, etc.)
- deleted old shallow files

Author: shadil-rayyan

docs/daily-reading/aggregators.md

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+# 🗞️ Tech Aggegrators & Forums
+### "The Public Square of the Internet"
+
+If you want to know news *before* it hits mainstream media, you go to aggregators. This is where news breaks first.
+
+---
+
+## 🟧 Hacker News (HN)
+*   **URL:** [news.ycombinator.com](https://news.ycombinator.com/)
+*   **What it is:** A simple list of links posted by startup founders and engineers.
+*   **The Culture:** Extremely intellectual, critical, and focused on hard engineering/startups.
+*   **How to use:**
+    *   Read the **Comments**. The comments are often better than the article.
+    *   Don't be intimidated. The smartest people in the world hang out here.
+    *   Search `Show HN` to see people launching cool new projects.
+
+## 🦞 Lobste.rs
+*   **URL:** [lobste.rs](https://lobste.rs/)
+*   **What it is:** Like Hacker News, but stricter. You need an invite to join (but anyone can read).
+*   **The Culture:** Very focused on Computer Science, PL Theory (Programming Language Theory), and UNIX.
+
+## 🌗 Daily.dev
+*   **URL:** [daily.dev](https://daily.dev/)
+*   **What it is:** A browser extension that replaces your new tab with tech news.
+*   **Best for:** Passive consumption. If you are lazy, install this.
+
+---
+
+## ⚠️ Warning: The "Doomscrolling" Trap
+It is easy to spend 3 hours reading Hacker News and feel like you worked. **You didn't.**
+*   **Rule:** Max 15 minutes per day.
+*   Check top stories in the morning, then close the tab.

docs/daily-reading/engineering_blogs.md

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+# 🏭 Engineering Blogs
+### "Reading the Minds of Great Engineers"
+
+You cannot work at Netflix (yet). But you can read exactly how they solved their biggest problems. Reading these blogs is the cheat code to looking like a "Senior Engineer" during interviews.
+
+---
+
+## 🏗️ The "Big Tech" Hall of Fame
+
+### 1. Netflix Tech Blog
+*   **Focus:** Microservices, Cloud Scaling, Culture.
+*   **Must Read:** [What happens when you press play?](https://netflixtechblog.com/)
+*   **Why Read:** If you want to be a **Backend Engineer**, this is your bible.
+
+### 2. Uber Engineering
+*   **Focus:** Geolocation, High-Traffic Systems, Data.
+*   **Must Read:** [Designing Uber's geospatial index (H3).](https://eng.uber.com/)
+*   **Why Read:** To understand how to handle millions of requests per second.
+
+### 3. Meta (Facebook) Engineering
+*   **Focus:** AI/ML, Frontend (React), Mobile.
+*   **Must Read:** [How we built simple/efficient android apps.](https://engineering.fb.com/)
+*   **Why Read:** They invented React. If you do frontend, you must read this.
+
+---
+
+## 🦄 The "Startup" Gems
+
+### 4. Discord Engineering
+*   **Focus:** Real-time communication, Elixir, Rust.
+*   **Famous Post:** [Why Discord switched from Go to Rust.](https://discord.com/blog/why-discord-is-switching-from-go-to-rust)
+*   **Why Read:** Best practical examples of "Why we picked X technology".
+
+### 5. Cloudflare Blog
+*   **Focus:** Internet security, How the web works (DNS/HTTP).
+*   **Why Read:** To understand the "pipes" of the internet.
+
+---
+
+## 🧠 How to Read These (Don't Panic)
+
+1.  **You won't understand 50% of it.** That is normal.
+2.  **Look for the "Why".** Don't focus on the code snippets. Focus on *why* they had a problem and *how* they decided to fix it.
+3.  **Google the unknown words.** If they say "We used Kafka for backpressure", and you don't know Kafka, Google "What is Kafka". That is how you learn.

docs/daily-reading/enginerring-blog.md

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+# 📚 Must-Read Books for CSE Students
+### "The Canon of Computer Science"
+
+Videos expire. Documentation changes. But these books deal with first principles that have stayed true for 30 years and will be true for 30 more.
+
+---
+
+## 🟢 Beginner (The "Ah-Ha!" Moment)
+
+### 1. Grokking Algorithms (Aditya Bhargava)
+*   **Why:** It teaches Algorithms using cartoons. Yes, cartoons.
+*   **Best for:** Visual learners who hate dry textbooks. It makes Big O notation actually make sense.
+
+### 2. The Pragmatic Programmer (Andy Hunt & Dave Thomas)
+*   **Why:** It doesn't teach you code. It teaches you how to *behave* like a professional coder.
+*   **Best for:** Learning habits (testing, debugging, communicating).
+
+---
+
+## 🟡 Intermediate (Writing Better Code)
+
+### 3. Clean Code (Robert C. Martin)
+*   **Why:** You will write code that "works". This book teaches you to write code that *humans can read*.
+*   **Best for:** Students about to start their first internship.
+
+### 4. Head First Design Patterns
+*   **Why:** Design Patterns (Singleton, Factory, Observer) are scary. This book uses puzzles and games to teach them.
+*   **Best for:** Java/OOD interviews.
+
+---
+
+## 🔴 Advanced (The "Google Engineer" Level)
+
+### 5. Designing Data-Intensive Applications (DDIA) - Martin Kleppmann
+*   **The Legend:** This is the most famous book in modern backend engineering.
+*   **Why:** It explains how databases *actually* work (B-Trees, SSTables, Replication, Sharding).
+*   **Warning:** It is dense. Read one chapter a month.
+
+---
+
+## 🏃‍♀️ How to Read Technical Books
+*   **Don't aim to finish.** Use them as reference.
+*   **Read the Code.** Don't skip the code blocks. Type them out.
+*   **Buy the Paper version.** It is easier to flip back and forth than a PDF.

docs/daily-reading/must_read_books.md

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+# 📧 Best Newsletters for Developers
+### "High Signal, Low Noise"
+
+Your inbox is a sacred place. Don't fill it with junk. Subscribe to these few, high-quality newsletters to get 10 years of experience delivered to you weekly.
+
+---
+
+## ⭐️ The "Must Haves" (Hall of Fame)
+
+### 1. ByteByteGo (Alex Xu)
+*   **Topic:** System Design.
+*   **Why:** He uses simple diagrams to explain complex things like "How WhatsApp handles 10B messages" or "How Credit Cards work".
+*   **Cost:** Free version is excellent.
+
+### 2. The Pragmatic Engineer (Gergely Orosz)
+*   **Topic:** Career Advice, Resume tips, Senior Engineering mindset.
+*   **Why:** He was an Engineering Manager at Uber. He tells you exactly what hiring managers think.
+*   **Cost:** Paid (but Free tier has good monthly articles).
+
+### 3. TLDR / Tldr.tech
+*   **Topic:** Daily Tech News Summary.
+*   **Why:** Keeps you updated on "Google released Gemini" or "React 19 is out" in 5 bullet points.
+
+---
+
+## 🏫 Learning Focused
+
+### 4. React Newsletter
+*   **Topic:** React.js ecosystem.
+*   **Why:** Frontend moves fast. This keeps you safe from FOMO (Fear Of Missing Out).
+
+### 5. Cassidy Williams (Rendevous)
+*   **Topic:** Web Development + Humor.
+*   **Why:** Lighthearted, fun, and contains interview questions every week.
+
+---
+
+## 💡 How to Read Them
+*   **Don't read them instantly.** Create a folder in your email called "Read Later".
+*   **Batch read** them on Saturday morning with a coffee.
+*   **Archive ruthlessly:** If you stop enjoying a newsletter for 3 weeks in a row, unsubscribe.