Blog
Development, infrastructure, SEO, AI and IT for business — short and to the point.
1495 articles
- IT for business4 min
How to Avoid Scope Creep in Software Projects
Scope creep happens when new ideas enter a project without being estimated. Fix the baseline scope, route every change through a change request with an estimate, and decide what you will postpone in exchange.
Practice - Web development4 min
CSS Grid Layout Guide: From Basics to Real Page Layouts
CSS Grid lays out elements in rows and columns at once: you define the grid tracks on the container and items drop into cells or named areas, which makes it ideal for page layouts.
Practice - SEO3 min
How to Find and Fix 404 Errors and Broken Links
Find broken links with a crawler and Search Console or Webmaster reports, then for each 404 decide: restore the page, 301 to the closest replacement, or honestly keep the 404 with a helpful error page.
Practice - DevOps3 min
Docker Multi-Stage Builds: How to Separate Build and Runtime
A single Dockerfile defines several stages: a heavy stage with all the tools builds the app, and only the finished output is copied into a small final image, without compilers, sources or dev dependencies.
Practice - AI & automation4 min
AI Training vs Inference: What the Difference Means for Cost
Training is the one-time, expensive process of teaching a model; inference is every use of the finished model. Most businesses never train from scratch and pay mainly for inference, per request or per server hour.
Basics - Programming4 min
Dynamic Programming: How to Recognize and Solve DP Problems
Dynamic programming applies when a problem splits into overlapping subproblems with optimal substructure; you solve it by defining state, transition and base case, and storing subproblem answers instead of recomputing them.
Advanced - Mobile development4 min
How to Set Up Push Notifications with Firebase Cloud Messaging
Connect Firebase to your Android and iOS apps, upload an APNs key, store device FCM tokens on your server and send messages through the Firebase Admin SDK; topics handle interest-based broadcasts and a test send from the console verifies delivery fast.
Practice - Marketing & analytics4 min
Email Marketing Metrics: Open Rate, CTR and Unsubscribes Explained
Since Apple Mail Privacy Protection, open rate is unreliable, so judge campaigns by clicks, CTOR and purchase conversions, and track bounces, unsubscribes and complaints as signals of list health and deliverability.
Basics - Design & UX3 min
Designing for Color Blindness: Practical Techniques
Never carry meaning with color alone: back it up with an icon, text, shape or pattern and make sure colors differ in lightness. Check designs with protanopia, deuteranopia and tritanopia simulators and in grayscale.
Advanced - Telegram & messengers4 min
How to Sell Paid Access to a Private Telegram Channel
The simplest option is a Stars subscription link, where Telegram handles payment, renewal and removal; for local cards you need a bot that issues personal invite links, approves join requests and removes members when access expires.
Practice - E-commerce & CRM4 min
How to Design a Custom CRM: Architecture and Data Model
A sustainable custom CRM rests on a small set of core entities, pipelines defined as data rather than code, row-level permissions, an append-only activity history and a separate integrations layer driven by events.
Advanced - Security4 min
How HTTPS Works: TLS Handshake, Certificates and Keys Explained
HTTPS is ordinary HTTP sent inside a TLS tunnel: during the handshake the server proves its identity with a certificate, both sides agree on fresh session keys, and from then on all traffic is encrypted and protected from tampering.
Basics - Databases & data4 min
How to Build a KPI Dashboard for a Business
Start from the decisions the dashboard must support, pick a few KPIs per department, combine CRM, 1C and spreadsheet data in one store with shared reference data, then build a summary-trends-details layout with a clear refresh schedule.
Practice - Hosting & cloud4 min
DNS Records Explained: A, AAAA, CNAME, MX, TXT, NS
DNS records tell the internet where to send requests for your domain: A and AAAA point to a server IP, CNAME points to another name, MX points to a mail server, TXT holds verifications and email policies, and NS defines who manages the zone.
Basics - IT careers4 min
How to Become a Game Developer: Roles, Engines and Skills
Pick one role (most people start as a gameplay programmer), one engine — Unity, Unreal or Godot — and its language, then ship small finished games and join game jams: a portfolio of completed projects outweighs any diploma.
Basics - Tools & no-code3 min
Google Forms: How to Create Surveys and Collect Responses
Create a form at forms.google.com, pick the right question types, add response validation and section branching, link a Google Sheet and turn on email notifications for new responses.
Practice - IT by industry4 min
Construction Project Management Software: How to Choose
Good construction software ties schedule, budget, procurement, subcontractor work and documents together; choose it by where you lose the most money and time, and roll it out starting with one pilot site.
Practice - Networks & office IT4 min
How to Choose an Office Printer or MFP: Laser, Inkjet or Lease
Choose by cost per page and real print volume, not by device price: an office with regular printing is usually best served by a networked laser MFP with scan to folder, and high volumes justify pricing a lease or managed print.
Practice - IT for business4 min
How to Build an IT Strategy for a Growing Company
An IT strategy is a short document that derives the required system changes from business goals, ranks initiatives by value and risk, matches them to budget and team capacity, and is reviewed regularly as the company grows.
Advanced - Web development4 min
CSS Position: Static, Relative, Absolute, Fixed and Sticky
static is normal flow, relative shifts an element while keeping its space, absolute and fixed take it out of flow and position it from a positioned ancestor or the viewport, and sticky sticks on scroll within its parent.
Basics - SEO4 min
How to Get Your Site Cited in AI Overviews and ChatGPT
AI assistants cite pages they can read that give a short, verifiable answer: open your site to their crawlers, put the answer first, name entities clearly, keep facts fresh and earn brand mentions elsewhere.
Practice - DevOps4 min
Docker Networking Explained: Bridge, Host and Custom Networks
Containers on the same user-defined network find each other by service name, and the outside world reaches an app only through a published port (-p). Host networking removes isolation and is rarely needed.
Basics - AI & automation4 min
AI Translation for Uzbek, Russian and English: Quality Guide
Both LLMs and classic machine translation handle Russian–English well; Uzbek is far less consistent, so you need a glossary, an explicit script choice and mandatory editing by a native speaker.
Practice - Programming3 min
Error Handling Best Practices: Exceptions vs Return Values
Exceptions are convenient when an error must travel far up the stack, while error values and Result make every failure explicit in the signature. More important than the approach: never lose errors, add context and handle them where a decision can be made.
Practice
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