About UsopnF.sh
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Why opnF.sh
Here at opnF.sh, our focus and passion is building intuitive, engaging educational tools for kinesthetic learners, people who don’t really get a concept until they execute it. Our philosophy is that the way we take in information has changed. Life comes fast, and traditional schools and other education systems haven’t adapted to that change.
That’s why our courses are hands-on first, with minimal reading. No sitting on your hands rewinding an instructor’s pre-recorded video or staring at a large white wall of text. We put you directly in the driver’s seat and guide you along the way. Every lesson is bite-size and 100% mobile friendly, so learning can happen wherever and whenever.
Stay on track
We understand that with micro learning, the education process can become scattered. To keep you on track, we built a student dashboard with progress tracking, a study planner plus calendar, and a tutor so every short session can be tracked and reviewed later.
The fields we teach
Currently we offer two products, with a third in the works. All of our products are geared toward fields the BLS and other organizations expect to grow over the next decade. Our aim is to help students build hands-on experience while also getting them ready for certification exams in these fields, with the goal of breaking into tech or leveling up into a new position.
ProCourses
ProCourses, our first and flagship product, runs in an emulated Linux terminal right in your web browser from your phone or desktop. You complete interactive lessons sprinkled with comprehension checks, followed by quizzes, labs, and flash cards for automaticity. Each course starts with an introduction to the Linux CLI, so you learn to speak the language of the computers that power the web.
CertPrep+
Our second product is CertPrep+. It’s essentially a language learning app, but for some of the most in-demand tech certifications today. You micro study and quiz your way through each certification’s exam objectives, then take a practice exam that gives targeted feedback on where you need to brush up. CertPrep+ also offers memory games that help you drill tech vocabulary, tools, and concepts.
Read
Read, which is our publication, takes an innovative approach to news and guides. For subjects that may elude new learners, we have an ELI5 (“explain like I’m 5”) system that helps students learn concepts that are deemed advanced in plain language. Under the hardest sections of each post, one tap opens the key terms and the idea behind them, explained simply.
ELI5: Docker Swarm vs Kubernetes▾

THE WORDS
- Cluster
- A group of computers working together as one.
- Node
- One computer in the cluster.
- Manager
- The node that decides where containers run and keeps track of everything.
THE IDEA
Swarm is like a feature already built into your phone that you just switch on. Kubernetes is more like a powerful app you have to download and set up first. Both get the job done, but one is ready the moment you want it.
Free to start
While the bulk of our courses and programs are for paying subscribers, we offer a wealth of free knowledge. You can get comfortable in the Linux CLI with Level 1 of every ProCourse, study for entry-level certifications such as AWS Cloud Practitioner and Microsoft Azure Fundamentals, and play memory games that help you prepare for your exams.
Orgs / Educators
We offer org accounts for educators and employers at a discounted rate, sometimes free upon review. Within the org admin panel, admins can create a custom study schedule or select from a preset, track students’ progress, and offer feedback to students along their educational journey. We believe this system is a great and affordable way to nurture students who show promise or support rising talent in your company. Learn more here.
Pricing
For pricing, we take two approaches. You can subscribe for access to everything, or, if a subscription doesn’t work for you, you can buy a course outright and keep it for life. We also offer 20% off for students and military, discounts for org-based accounts, and a 30-day money-back guarantee. On top of that, 5% of every purchase goes to the Boys & Girls Clubs of America.
To close, we look forward to having you as a student. If there’s anything we can help with, please feel free to reach out anytime on our Contact page.