What Is a Certificate of Deposit (CD): Guaranteed Returns Explained
Alexa Velin
June 7, 2026
Root access to modern finance.
Root access to modern finance.
A crypto IRA lets you invest in Bitcoin inside a tax-advantaged retirement account. Here’s how it works, what it costs, and if it’s worth it.
Learn what Curve Finance (CRV) is, how the StableSwap AMM works, what veCRV means, and why Curve became DeFi’s deepest stablecoin liquidity layer.
What is an HSA account? Learn the triple tax advantage, 2026 contribution limits, and how to use your HSA as a stealth retirement account that beats a 401k.
Learn what an expense ratio is, how it silently erodes your investment returns, and what makes a good one in 2026. Real data from ICI and Morningstar.
What is Lido Finance? Learn how stETH lets you earn ETH staking rewards without locking 32 ETH. Complete guide covering how it works, risks, fees, and DeFi use cases.
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.
Learn how to use the vmstat command in Linux to monitor CPU, memory, swap, and I/O in real time. Includes output explanation and troubleshooting examples.
Configure /etc/fstab in Linux to automate disk mounting. Learn the six fields, UUID vs device names, key mount options, and how to recover if something breaks.
Learn how to change timezone in Linux using timedatectl, manual symlink, and dpkg-reconfigure. Includes NTP sync, UTC best practices, and real command examples.
Use the Linux SSH config file (~/.ssh/config) to create aliases, configure ProxyJump, and manage multiple servers without typing long commands.
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.
Learn how to use Git on Linux from scratch. Install, configure, commit, branch, and push code. Practical sysadmin workflows with real command examples.
Learn how to compile software from source in Linux with this step-by-step guide covering configure, make, make install, dependencies, and troubleshooting common errors.
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.
Master tcpdump to capture and analyze network traffic on Linux. Learn filters, real-world examples, and troubleshooting techniques every sysadmin needs to know.
Learn the Linux which command to find executable locations in PATH. Discover when to use which vs type vs whereis, troubleshoot conflicts with -a, and master command resolution.
Master the Linux date command: formatting output, date arithmetic, Unix timestamps, timezones, and real bash scripting examples for sysadmins.
Master Linux CPU monitoring with top, htop, and mpstat. Learn to troubleshoot high CPU usage, understand load average, and identify performance bottlenecks.
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 configure SELinux on Linux: check and switch modes, manage file contexts, troubleshoot denials, and use booleans to harden your servers.
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.
Learn how to use the find command in Linux to search files by name, type, size, permissions, and time — with real sysadmin examples and exec tricks.
I tested 6 Linux distros for servers in 2026. Ubuntu, Debian, AlmaLinux, Rocky, Fedora, openSUSE—here is which one belongs on your production server.
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 use the openssl command in Linux for certificate inspection, key generation, SSL testing, and file encryption. Complete sysadmin guide with examples.
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
Forex was supposed to be my path to easy money. Trade 24 hours a day! 100:1 leverage! No PDT rules! What could go wrong? Everything, as it turns out. I lost $40,000 in my first year trading forex because I jumped into exotic pairs with maximum leverage, no understanding of
Learn how to use the screen command in Linux to manage terminal sessions, run long processes, and recover from SSH disconnects. Complete guide with examples.
I’ve blown up accounts at seven different brokers. Not because I’m proud of it, but because I’m apparently a masochist who needs to test every platform personally before believing the reviews. Over the past six years, I’ve traded options on TD Ameritrade, E*TRADE, Robinhood, Tastyworks, Interactive Brokers, Webull, and Fidelity.
Let me start by ruining the suspense: Asking if options are safer than futures is like asking if getting punched in the face is safer than getting kicked in the balls. They’re both going to hurt, just in different ways. I’ve lost money in both, made money in both, and
Learn how to check load average in Linux with uptime, top, and htop. Understand what the numbers mean, when to worry, and how to troubleshoot high load issues.
Master the Linux tar command with practical examples. Learn to create, extract, and manage compressed archives with this complete 2025 guide for beginners.
Learn how to install and configure Nginx web server on Linux. Step-by-step guide covering installation, server blocks, SSL setup, and security hardening.
Understand the key differences between Roth and Traditional IRAs. Learn which retirement account saves you more in taxes based on your income, age, and financial goals.
Protect your Linux server with these 7 open source security tools I personally run on every box. From Lynis auditing to Fail2ban, rkhunter, and Suricata IDS.
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.
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.
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.