What Are Crypto Perpetual Futures (And How I Made $8,400 Trading Them)
Alexa Velin
January 18, 2026
Root access to modern finance.
Root access to modern finance.
Welcome to our daily blog, your daily dose of inspiration, information about cryptocurrency and financing and everything in-between. Shell & Coin is proudly sponsored by Royal Pheromones.
Ondo Finance tokenizes US Treasuries as yield-bearing crypto tokens. Here’s how USDY, OUSG, and the ONDO token work in 2026.
Stacks (STX) brings smart contracts and DeFi to Bitcoin without changing it. Learn how Proof of Transfer, sBTC, and Stacking let you earn real BTC rewards.
What is Sei Network (SEI) crypto? Learn how this L1 blockchain delivers 12,500 TPS, sub-400ms finality, and DeFi-native speed using Twin-Turbo consensus.
A 529 plan is a tax-advantaged education savings account with tax-free growth. Learn how it works, what it covers, and the 2026 rules that changed everything.
A SEP IRA lets self-employed workers contribute up to $72,000 tax-deferred in 2026. Here’s how it works, who qualifies, and how to open one today.
A certificate of deposit (CD) pays a guaranteed fixed rate for locking up your money. Learn how CDs work, current rates, types, penalties, and when to use one.
Learn how to configure Nginx as a reverse proxy on Linux. Covers proxy_pass, headers, SSL termination, WebSocket support, and security hardening with examples.
Step-by-step guide to installing Python on Linux. Covers apt, pyenv, venv, and the PEP 668 externally-managed error on Ubuntu, Debian, and RHEL.
Install Redis on Linux the right way — step-by-step commands for Ubuntu, Debian, and RHEL, plus security hardening and kernel tuning every sysadmin needs.
Learn how to install PostgreSQL on Linux step by step. Covers Ubuntu, Debian, and RHEL with first-login setup, user creation, and remote access config.
Install Node.js on Linux the right way — nvm, apt, or NodeSource. Step-by-step commands for Ubuntu, Debian, RHEL, and Arch. Pick the method that fits your workflow.
Learn how to install K3s on Linux in minutes — single-node and multi-node setup, kubectl access, and deploying your first workload on lightweight Kubernetes.
Master tcpdump to capture and analyze network traffic on Linux. Learn filters, real-world examples, and troubleshooting techniques every sysadmin needs to know.
Learn how to use Vim in Linux with this beginner-friendly guide. Master essential commands, modes, and navigation to edit files like a pro.
Master the Linux chmod command with practical examples. Learn symbolic and numeric modes, common permission patterns, and avoid security mistakes. Complete 2025 guide.
Learn how to use the Linux tail command to monitor logs in real-time, view file ends, and troubleshoot systems. Essential examples for sysadmins.
Running a homelab NAS in 2026? I tested TrueNAS SCALE, OMV, Unraid, and more. Here’s which Linux NAS software is actually worth your time.
Learn how to use nftables in Linux with real examples. Covers tables, chains, rules, and building a persistent server firewall from scratch.
Learn how to kill a process in Linux with kill, killall, and pkill commands. Complete guide covering SIGTERM vs SIGKILL signals, zombie processes, and best practices for process management.
Learn how to check memory usage in Linux using free, top, htop, and vmstat. Understand what the numbers mean, when to worry, and how to troubleshoot memory issues.
Learn how to start investing with little money in 2025. Step-by-step guide for beginners with practical strategies, best platforms, and avoiding common mistakes that cost thousands.
Introduction If you’ve been in crypto long enough, you’ve seen the headlines. Exchange hacks. Frozen withdrawals. Billions vanishing overnight. Finding the best cold storage wallets in 2025 isn’t just smart—it’s essential if you’re serious about protecting your assets. I learned this lesson the hard way. Back in 2015, I had
Learn how to use the dmesg command in Linux to view kernel messages, troubleshoot hardware issues, and diagnose boot problems with practical examples.
Learn how to use systemctl to manage Linux services. Master start, stop, enable, disable, and troubleshooting commands with real-world examples.
Master the grep command in Linux with practical examples. Learn essential flags, regex patterns, recursive search, and real-world sysadmin use cases.
Master Linux file permissions with this complete guide. Learn to read rwx notation, avoid chmod 777 mistakes, and secure your system properly.
I tested 12 crypto trading bots with real money. Only 3 made profits. Here’s the truth about automated crypto trading in 2025, including the bots that actually work (with real numbers).
Encountering “sudo: command not found” on Linux? Learn how to fix this error with step-by-step solutions for all distributions, from installing sudo to fixing PATH issues.
Honest Hetzner review 2025: pricing, performance benchmarks, pros & cons, and who it’s really for. A Linux sysadmin’s take after years of real-world use.
Learn how to install, configure, and use Docker on Linux with this comprehensive beginner guide. Includes essential commands, best practices, and troubleshooting tips.
Weekly options are crack cocaine for traders. I’m not even joking. They’re addictive, dangerous, and can absolutely destroy your life if you don’t respect them. But they can also generate insane returns that would make any hedge fund manager weep with envy. I’ve made $12,000 in a single day trading
Set up Prometheus, Node Exporter, and Grafana on Linux step by step. Get a live CPU, RAM, and disk monitoring dashboard in under 30 minutes.
Demystifying systemd-resolved: A Comprehensive Guide to Local DNS Resolution Hey there, fellow Linux enthusiasts! Alice here, ready to dive deep into another fascinating corner of the Linux world. Today, we’re tackling systemd-resolved, a system service that provides local DNS resolution. If you’ve ever wrestled with DNS configuration, especially in complex
Should you max out 401k or pay off debt first? Learn the exact sequence that works, common mistakes that cost thousands, and how to make the right choice for your situation.
Learn how to use firewalld in Linux to manage zones, allow services, open ports, and write rich rules. The complete guide for RHEL, Rocky, and Fedora.
Learn how to generate SSH key in Linux with this complete guide. Set up Ed25519 keys, understand key-based authentication, and secure your servers against brute force attacks.
Stellar (XLM) is the payments blockchain powering cross-border remittances, USDC, and the DTCC’s 2027 tokenized securities platform. Here’s how it works.
A spot Bitcoin ETF holds real BTC and trades on stock exchanges. Here’s how it works, what it costs, the top funds to know, and who should actually buy one.
Jupiter (JUP) is Solana’s dominant DEX aggregator with $1T+ in volume and 95% market share. Here’s how it works, what JUP does, and if it’s worth your attention.
Injective (INJ) is a Layer 1 blockchain built from scratch for DeFi finance. Learn how its MEV-resistant order book, burn tokenomics, and RWA markets work.
What is Shiba Inu (SHIB)? Learn how this Ethereum meme coin evolved into a DeFi ecosystem with Shibarium L2, ShibaSwap DEX, and a deflationary burn model.
Zero knowledge proofs let you verify truth without revealing data. Here’s how ZK tech powers Ethereum L2 scaling, DeFi privacy, and the future of crypto in 2026.
Set up MetaMask wallet in minutes. Learn how to install it, secure your seed phrase, add custom networks, and avoid the scams that steal from 500 users daily.
What is Hedera HBAR crypto? Learn how hashgraph consensus, the Governing Council, and enterprise use cases make HBAR different from every other blockchain.
Hot wallet vs cold wallet explained: the key differences, real security risks, and which crypto storage strategy makes sense for your holdings.
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