IT Fundamentals for Beginners: Guides and Tutorials

New to IT? Start here. These guides explain the foundations every IT role builds on: how software projects work from plan to release, how networks and servers talk to each other, the Linux commands you use every day, and how to choose your path into IT.

Guide + video Networking concepts explained: IP addresses, DNS, ports, subnets, NAT, cloud, Docker and Kubernetes networking Networking basics for beginners: IP addresses, DNS, ports, subnets, routing, firewalls, NAT, VPCs, Docker and Kubernetes networking, explained simply. Guide + video Linux commands for beginners: the 20% of commands you'll use 80% of the time (with a real-world example) Learn the basic Linux commands you'll use most: pwd, cd, ls, cat, grep, cp, wc, find, diff, curl, vim and chmod, by fixing a real broken app. Guide + video Proxy vs reverse proxy vs load balancer: what each one does and how they work together Proxy vs reverse proxy vs load balancer explained for beginners: who each serves, where it sits, and a working NGINX reverse proxy config. Article IT Fundamentals for Beginners: What to Learn First (and in What Order) IT fundamentals are the basics every tech role builds on: computers and OS, Linux, networking, the web, programming, databases, Git, cloud and the SDLC. Article Software Development Life Cycle (SDLC): Phases, Roles and Models Explained for Beginners The SDLC is how software gets built: plan, design, develop, test, release and operate. Each phase, who does it, and Waterfall vs Agile vs DevOps. Article How to Get Into IT With No Experience: Top IT Career Paths and How to Choose One How to get into IT with no experience or degree: the top IT career paths compared, which are entry level, the skills you need and where to start.