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.
What is the dig Command (And Why DNS Matters More Than You Think) Learning how to use dig command in Linux transformed the way I troubleshoot network issues. The dig command (Domain Information Groper) is a DNS lookup utility that comes from the BIND project, and it’s hands-down the most
Learn how to find and execute profitable crypto arbitrage trades from someone who turned 0k into 7k. Real strategies, tools, and warnings about what actually works in 2025.
Learn how to use rsync in Linux with this complete guide. Master file synchronization, remote transfers, backups, and avoid common mistakes that cost hours.
Looking for the best Linux email client in 2026? I tested 6 options on my homelab — from Thunderbird to NeoMutt. Here’s which one fits your workflow.
Learn how to check Linux version and distribution using hostnamectl, /etc/os-release, and uname commands. Complete guide with practical examples for 2025.
Learn how to use tmux in Linux for persistent sessions, split panes, and better terminal management. Step-by-step guide with real sysadmin examples and configuration tips.
Complete Guide to Disk Partitioning in Linux for Maximum Performance (2025) If you’ve ever installed Linux or managed storage on a Linux system, you’ve likely encountered disk partitioning. While it might seem like a technical hurdle to overcome during installation, proper disk partitioning can significantly impact your system’s performance, security,
Master Bitcoin ETF investing in 2025 with proven allocation strategies, tax advantages, and expert rebalancing techniques. Learn the optimal portfolio mix that beats direct ownership.
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 use the head command in Linux to quickly preview files, analyze logs, and build powerful pipelines. Practical examples for sysadmins in 2025.
Why 74°F in Texas is slowly destroying your health (and why “just open a window” is terrible advice) The Texas Reality Check College Station, Texas: 75% average humidity. 200+ days above 70% humidity. Dew points so high they’re classified as “oppressive.” When someone suggests opening a window on a 71°F
Learn what a crypto wallet is, how it works, and the critical mistakes that cost beginners billions. Your complete guide to choosing and securing your first wallet.
Testing the best Linux IDEs of 2026: VS Code, Neovim, JetBrains, Zed, Eclipse, and Geany ranked by real performance, setup ease, and workflow fit.
Let me tell you about the time I spent $50,000 on AI trading bots thinking I’d found the cheat code to the market. Spoiler alert: I lost $35,000 and learned that most “AI trading bots” are about as intelligent as a Magic 8-Ball with a subscription fee. But I also
I’ll never forget the first time I had to mount an external drive in production at 2 AM. The backup server was running out of space, and I needed to add a new disk fast. I fumbled through the mount command, second-guessing every flag, triple-checking the UUID before adding it
Master Linux output redirection with stdin, stdout, and stderr. Learn pipes, file descriptors, 2>&1, and /dev/null through practical examples every admin needs.
An honest review of the Tria crypto card from a self-custody advocate. Covering the up to 6% cashback, card tiers, pros and cons, and whether this cross-chain neobank card is worth it in 2025.
Learn how to set a static IP in Linux using Netplan, nmcli, or /etc/network/interfaces — with working examples for Ubuntu, RHEL, Rocky, and Debian.
Compare the 5 best Linux tiling window managers in 2026 — Hyprland, Sway, i3, Niri, and dwm. I tested each for performance, config ease, and daily use.
Learn how to install Let’s Encrypt SSL on Linux with Certbot for Nginx. Get a free certificate, set up auto-renewal, and secure your server in minutes.
Learn DeFi yield farming from someone who lost $100k before figuring it out. Real strategies for 30-40% APY, risk management, and the protocols that actually work in 2025.
Use the Linux SSH config file (~/.ssh/config) to create aliases, configure ProxyJump, and manage multiple servers without typing long commands.
Master Linux network interfaces with ip, nmcli, and ethtool commands. Learn to troubleshoot connectivity issues and understand network interface names.
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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