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.
The Graph (GRT) is the indexing protocol powering most of DeFi. Learn how subgraphs, indexers, curators, and GRT tokenomics actually work.
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.
Dollar cost averaging (DCA) in crypto means buying fixed amounts at regular intervals. Learn how it works, when it beats lump sum, and how to start today.
Learn how Ethereum staking works, the 4 methods to earn ETH rewards, current APY rates (3-5%), real risks, and IRS tax rules. No 32 ETH needed for most.
Learn how Worldcoin (WLD) uses iris scans to verify human identity, what World ID enables, how World Chain works, and the privacy risks you need to know.
Learn how to set up Samba on Linux step by step — smb.conf, user setup, firewall rules, SELinux context, and connecting Windows and Linux clients.
Learn to use Btrfs on Linux — create subvolumes, take snapshots, enable zstd compression, and run scrubs. Practical commands for every Linux admin.
Learn how to configure AppArmor on Linux—check status, create custom profiles, switch between modes, and harden your system with real command examples.
Learn how to configure SELinux on Linux: check and switch modes, manage file contexts, troubleshoot denials, and use booleans to harden your servers.
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.
Learn how to use iotop in Linux to monitor disk I/O per process in real time. Install, read output, use key flags, and diagnose disk bottlenecks fast.
Learn how to use Podman in Linux: install it, run rootless containers, manage images, and integrate with systemd. The Docker alternative that is free forever.
Master Linux output redirection with stdin, stdout, and stderr. Learn pipes, file descriptors, 2>&1, and /dev/null through practical examples every admin needs.
Master the top command in Linux with real-world examples for monitoring CPU, memory, and processes. Complete guide with practical troubleshooting techniques for 2025.
Learn how to use the ps command in Linux with real-world examples. Master process monitoring, troubleshooting, and system administration with this essential tool.
Tested 6 Linux remote desktop tools in 2026 on my homelab: RustDesk, Remmina, XRDP, NoMachine, TigerVNC, and GNOME Remote Desktop — with honest pros/cons.
Learn SSH tunneling in Linux with real command examples. Master local, remote, and dynamic port forwarding to secure your connections like a pro.
I’m about to save you $100,000. That’s how much I lost making every single mistake on this list. Some traders are smart and learn from others’ mistakes. I’m apparently not that smart – I had to make them all personally, like some kind of masochistic completionist collecting failure achievements. The
Learn how to check hostname in Linux using hostname, hostnamectl, and configuration files. Master FQDN lookups and hostname management for better server administration.
Master the ls command in Linux with this complete guide. Learn essential options, advanced techniques, common mistakes, and real-world examples from 15 years of system administration.
Learn how to use the lsblk command in Linux with real examples. View block devices, UUIDs, and storage layout with essential options covered.
Learn how to invest in index funds with this complete beginner’s guide. Warren Buffett’s proven strategy, step-by-step instructions, and common mistakes to avoid in 2025.
Discover the best Linux container management tools in 2026. I personally tested Portainer, Dockge, Lazydocker, ctop, Komodo, and Dozzle on my homelab.
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.
Monitor CPU, memory, disk I/O, and network—historically. Learn how to install sysstat and use the sar command in Linux to analyze past performance.
Learn how to use nmap in Linux for network scanning, security audits, and port discovery. Complete guide with examples, best practices, and legal considerations.
Compare the best Linux shells in 2026 — Bash, Zsh, Fish, and Nushell. Find out which shell fits your workflow based on speed, features, and scripting needs.
Add a user in Linux the right way. This guide covers useradd, adduser, passwd, usermod, userdel, and granting sudo access with real examples.
Learn how to change timezone in Linux using timedatectl, manual symlink, and dpkg-reconfigure. Includes NTP sync, UTC best practices, and real command examples.
Learn the crucial difference between apt update and apt upgrade commands. Discover why running them in the right order matters for Linux system security.
Learn the crucial difference between systemctl restart and reload commands. Discover when to use each for zero-downtime updates and proper Linux service management.
Master iptables firewall in Linux with practical examples for SSH, HTTP security. Learn chains, tables, rules from a sysadmin who locked herself out twice.
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 the umask command in Linux to set secure default file permissions. Includes real-world examples, octal notation explained, and security best practices for 2025.
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.
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.
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.
Aptos is a Layer-1 blockchain built by ex-Meta engineers using the Move language. Learn how APT, Block-STM, and real-world asset adoption make it unique.
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