ivan epou

Want to crack backend interviews? Don't try to learn everything. Master these 20 topics: 1) Request–Response Cycle 2) REST APIs 3) HTTP Methods & Status Codes 4) Middleware 5) Authentication vs Authorization 6) Event Loop 7) Async/Await & Promises 8) Error Handling 9) Environment Variables 10) Logging & Debugging 11) SQL vs NoSQL 12) Schema Design 13) Indexing 14) Transactions & ACID 15) Database Relationships 16) JWT, Sessions & Cookies 17) Password Hashing 18) Caching & Rate Limiting 19) Scalability Basics 20) API Versioning & Deployment Master these and most backend interviews become much easier.

@AlfieJCarter MCP

I broke down the full LinkedIn outreach workflow so GTM engineers don't have to figure out what to build first. I put together my Claude Code LinkedIn Outreach System (sorted by outreach stage). I work with GTM engineers and founders running LinkedIn outbound and the ones who fill pipeline fastest aren't just sending one-off connection requests — they run one command that finds prospects, researches them, warms them up, and sends personalised outreach in one Claude Code session instead of rebuilding the workflow from scratch every day. Most GTM engineers spend 45 minutes on LinkedIn, find a handful of profiles that half-match their ICP, write a connection note that could have gone to anyone, and track nothing. Same effort. Zero system. This fixes that. I use this to go from "no idea who to contact today" to a full daily outreach session done in under 20 minutes: - 6 slash commands covering find, check, outreach, add, daily, and pipeline review - Each tagged by stage: ICP discovery, account research, warmup, connection, follow-up - The exact search parameters that surface ICP-matching prospects automatically - A chain-this principle per command showing what to run before and after - The LinkedIn warmup sequence that gets connection requests accepted before you ask for anything - A contact log that prevents you from ever messaging the same person twice - A how-to-use guide so it is a repeatable daily system, not a one-off workflow Want access? → Comment "MCP" → Follow me and I'll DM you the full system

@systemdesignone Playbook

API Design Playbook (Giveaway Alert) • Core API fundamentals. • Clean & scalable design principles. • Popular patterns used in real-world systems. • Practical concepts for interviews & building projects. 24 HOURS ONLY! To get it for free: 1 Follow @systemdesignone [MUST] 2 Like & Retweet to get DM 3 Reply "Playbook" Then I'll DM you the details.

@clcoding math

Data Science and Machine Learning – Mathematical and Statistical Methods • Save 100+ hours on research It's 100% FREE! To get it, just: • Like and retweet • Comment " math" • DM me in the message for the link

@Habibat456 Design

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@AlfieJCarter Agents

R.I.P. rebuilding your GTM stack from scratch every session. A complete Claude Skill Library can replace a $15,000/month agency retainer. It is not as easy as hiring someone else to do it. But if you start today, you can have 130+ skills loaded into Claude Code covering every GTM job by end of this week. I usually charge $299 for access to this library but today, it's free. Like this post + comment 'Agents' and I'll DM you the entire skill library for free. (Must be following, or I can't message.) Taking this down in 48 hours.

How to never be stuck on "I don't know how" again: (download the /how-to Claude skill for free) 1. Go to Claude (desktop app). Open Cowork. 2. Download my /how-to skill here: how-to-ai.guide. 3. Don't pay anything. Reply to the welcome email. 4. Open the Notion link. Go to "Claude Cowork" 5. Download /how to skill under "Skills" 6. Click Customize → Skills → "+" → Upload a skill. 7. Select the skill you just downloaded from me. 8. Open a new chat. Type /how-to. 9. Prompt the thing you've been avoiding: "I want to do X with Claude, but I have no idea where to start." To copy-paste the skill prompt instead: --- name: how-to description: Turn any 'I want to do X with Claude but I don't know how' into a finished result the user built with their own hands. Use this whenever someone names a goal they want to reach with Claude or AI and wants to be walked there until it is actually done. That covers building a Cowork workflow, automating a repetitive task, setting up a content or newsletter system, writing better prompts, connecting a tool, organizing files, or any 'how do I get Claude to' request. Trigger on phrases like 'how do I', 'I want to do this with Claude', 'give me the exact steps', 'walk me through', 'teach me to', 'I don't know how to', 'get me to the result', or the command /how-to. The skill maps the full step list first, then coaches one rookie-level step at a time and will not move on until the current step is finished and understood. Built for non-technical beginners. --- # How-to Coach a non-technical person from "I want to do X with Claude but I don't know how" to a finished result they built with their own hands, in a way they could repeat without you. ## Core rule Map the whole path first. Then coach one step at a time. Don't reveal or start the next step until the current one is done and the user understands it. Why this matters: a beginner who sees every step at once freezes. A beginner who finishes one clear step and feels it work keeps going. Going one step at a time is the whole method, not a nicety. They do the work, not you. Even in Cowork where you could finish the task yourself in seconds, show the exact move and let them make it. Optimize for them repeating it next week on their own. If you've put more than one step in front of them, pull back to one. ## Who you're coaching Assume non-technical, possibly their first real project with Claude. They may not know what a file path is, where a button lives, or what "run the prompt" means in practice. - Define any word that isn't everyday English, the first time you use it. - Show, don't describe: the exact thing to click, the exact words to type, the exact prompt to paste in a code block. - Never call a step obvious. If it has three sub-actions, write all three. ...." PS: I couldn't paste the entire prompt here. Access the full skill here: ruben.substack.com/p/i-replaced-m…

Claude FULL COURSE 4 HOURS (Build & Automate Anything)

Instead of watching an hour of Netflix, watch this 2 hour hour Stanford lecture will teach you more about how LLMs like ChatGPT and Claude are built than most people working at top AI companies learn in their entire careers.

Claude Code Advance Course - 3 Hours

Claude FULL COURSE 1 HOUR (Build & Automate Anything)

Here's probably the best Claude Cowork tutorial under 25 minutes. It is by Tina Huang ( ex-Meta data scientist).

All Paid Courses (Free for First 4500 People) 𝗣𝗮𝗶𝗱 𝗖𝗼𝘂𝗿𝘀𝗲 𝗙𝗥𝗘𝗘 (PART - 1) 1. Artificial Intelligence 2. Machine Learning 3. Prompt Engineering 4. Claude,Chatgpt,Grok 5. Data Analytics 6. AWS Certified 7. Data Science 8. BIG DATA 9. Python 10. Ethical Hacking (72 Hours only ) Like + RT + comment ' Drive ' Must Follow me so I can DM you.

11 FREE AI COURSES TO TRY IN 2026: 1. Foundation of Prompt Engineering 👉 skillbuilder.aws/learn/VF6H4SZI… 2. Retrieval Augmented Generation 👉 imp.i384100.net/oN0n4e 3. AI Essential Courses 👉 grow.google/ai/ 4. Intro to Generative AI 👉 cloudskillsboost.google/paths/118 5. Intro to Responsible AI 👉 cloudskillsboost.google/course_templat… 6. LLMOps 👉 deeplearning.ai/short-courses/… 7. CS50 Introduction to AI with Python 👉 cs50.harvard.edu/ai/ 8. Introduction to AI 👉 microsoft.github.io/AI-For-Beginne… 9. Academy Resources 👉 academy.openai.com 10. A Practical Guide to Building Agents 👉 cdn.openai.com/business-guide… 11. Prompt Engineering for ChatGPT 👉 imp.i384100.net/Jk4qze