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.
Learn what tax loss harvesting is and how it works. Real examples, wash sale rule explained, common mistakes, and when this tax strategy saves you money.
Learn how to install MySQL on Linux with this step-by-step guide. Covers Ubuntu and RHEL setup, mysql_secure_installation, users, and firewall rules.
Master Linux file permissions with this complete guide. Learn to read rwx notation, avoid chmod 777 mistakes, and secure your system properly.
I tested 5 popular Linux text editors — Nano, Vim, Neovim, VS Code, and Emacs — so you don’t have to. Here’s what sysadmins actually need in 2026.
Master the nohup command in Linux. Learn syntax, real-world examples, output redirection, and how nohup compares to screen, tmux, and disown for background processes.
Master the tr command in Linux with practical examples, common mistakes to avoid, and real-world use cases. Learn when to use tr vs sed vs awk for text processing.
Learn how compound interest works with real examples and calculations. Discover the Rule of 72, avoid common mistakes, and maximize your wealth with practical strategies.
Tested 6 Linux backup tools in 2026 — Restic, Borg, Kopia, Timeshift and more. Find the best Linux backup software for your homelab or server.
Learn how to use rsync in Linux with this complete guide. Master file synchronization, remote transfers, backups, and avoid common mistakes that cost hours.
The best Linux virtualization software in 2026, tested: Proxmox VE, KVM/QEMU, VirtualBox, GNOME Boxes, and more — ranked for homelab and enterprise use.
Troubleshooting Common Linux Boot Problems: A Comprehensive Guide Advertisement: Racknerd.promo – Affordable and Reliable Servers Troubleshooting Common Linux Boot Problems: A Comprehensive Guide Booting problems can be frustrating for Linux users. This guide provides a comprehensive approach to troubleshooting common boot issues, helping you get your system back up and
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.
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.
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 how to use the SCP command in Linux to securely transfer files between systems. Includes syntax, real-world examples, troubleshooting tips, and security best practices.
Let me start with a confession that’ll either make you feel better about your losses or terrified about what’s possible: I lost $100,000 in my first three years of trading. Not paper losses. Not “unrealized” losses. Cold, hard, gone-forever money. $60,000 was my savings. $40,000 was borrowed from credit cards
Learn how to set up an NFS server on Linux to share files across your network. Step-by-step guide for Ubuntu and RHEL with security tips and mount options.
Alright, let’s talk about the Greeks. No, not the people who gave us democracy and gyros – I’m talking about Delta, Gamma, Theta, Vega, and their bastard cousin Rho that nobody cares about. These are the forces that control whether your options make money or turn into expensive toilet paper.
Master tcpdump to capture and analyze network traffic on Linux. Learn filters, real-world examples, and troubleshooting techniques every sysadmin needs to know.
Master the wget command in Linux with practical examples. Learn to download files, resume transfers, mirror websites, and automate downloads like a pro.
Master the Linux date command: formatting output, date arithmetic, Unix timestamps, timezones, and real bash scripting examples for sysadmins.
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 use Ansible on Linux to automate server setup with playbooks, inventories, and modules. Step-by-step guide with real examples for sysadmins.
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,
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.
The biggest onchain exchange
Centralized-exchange speed, but your funds stay in your own wallet. No account, no KYC.
Try Hyperliquid