Next steps: IT support, networking and Linux administration

You have come a long way: from switching a computer on to reading logs and thinking about security. The question now is where to go next. There is no single correct road, and you do not need to choose for life. This lesson looks at three closely related directions that build on what you already know: IT support, networking and Linux administration. For each one you will see what the work is like, what you already have, what is missing and a first project that proves your skill.

How to choose a direction

Choose by what you enjoy doing, not only by what is fashionable. After a small project in each area, ask yourself three questions. Did the time pass quickly? Did I want to find out more when I got stuck? Would I be happy doing this for a few hours every week? A yes to those matters more than any list of the best jobs. You can also change direction later: all three pathways here share the same foundations.

IT support

IT support, often called a Help desk or service desk role, is the front line of technology. People ring or message when something does not work: they cannot sign in, the printer is silent, a file has vanished. Your job is to find out what is wrong, fix it or pass it on to the right person, and keep the person informed. Most work is recorded in a Ticket: a short written record of the problem, what was tried and the result. The best support staff are calm, patient and clear, and these soft skills matter as much as technical ones.

You already have the heart of it: the troubleshooting method, reading error messages, finding evidence, asking precise questions and recording solutions. What is usually missing is breadth (more hardware, more software, more operating system versions) and practice with real people. Those come with time and repetition.

• Skills to add: managing accounts and passwords safely, setting up printers and shared folders, basic remote support, writing short plain-language instructions.
• Beginner project: keep a personal fault log. Every time something goes wrong on your own or a friend's computer, write the symptom, the evidence, what you tried and what fixed it. After twenty entries, turn the best five into a one-page guide for a family member.
• Beginner goal: in three months, fix five real faults on your own and be able to explain each one in plain words.

Networking

Network technicians and engineers build and look after the links that join devices: cables, Wi-Fi, switches, routers and firewalls, and the rules about addresses and names that make them work. A normal task might be working out why one room has weak Wi-Fi, planning addresses for a new office or tracing why a website cannot be reached. You have already met the main ideas: IP addresses, DHCP, DNS, ports, packets and diagnostic tools such as ping and traceroute.

• Skills to add: subnetting (splitting a network into smaller ones), how routers share routes, VLANs (virtual separate networks on the same cables), reading network diagrams and, later, configuring real equipment.
• Beginner project: draw and document your home network. List every device, its IP address, how it connects and what it is for. Find the default gateway and the DNS server. Take a measured speed and signal check in three rooms and write what you would change. Keep the document up to date.
• Beginner goal: in three months, explain, without notes, what happens from typing a web address to seeing the page, and subnet a simple private network on paper.

Linux administration

A Linux administrator looks after computers that run Linux, very often servers with no screen that are reached through the terminal. The work is the module you have just finished: accounts and permissions, updates, services, logs, storage and backups, done carefully and repeatably. As the number of machines grows, administrators write scripts so that a task done once by hand can be done the same way every time.

• Skills to add: comfortable terminal use every day, a text editor in the terminal, installing and configuring a service, remote login with keys, scheduled jobs and writing safe scripts.
• Beginner project: create an Ubuntu virtual machine, set up a standard user and an administrator user, turn on automatic security updates, write down your backup plan and complete one restore drill. Finish by writing a one-page runbook, which is a set of instructions for a colleague who has to look after it.
• Beginner goal: in three months, spend twenty minutes a day in the terminal on your practice machine and finish the runbook.

Certificates, portfolios and honest expectations

A Certification is an exam-based qualification from a vendor or a standards body. Employers sometimes ask for them, particularly for support and networking roles, and a syllabus is a useful checklist of what to learn. Examples are CompTIA A+ for support, Cisco CCNA for networking and the Linux Professional Institute LPIC-1 or CompTIA Linux+ for Linux. The exams cost money, and the content changes, so check the current details on the organisers' websites before deciding.

A Portfolio is a small collection of evidence that you can do the work: your fault guide, your network map, your runbook. Employers and clients often trust a clear, honest portfolio more than a list of courses. Keep it free of private information such as real passwords and real addresses.