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Learning Tracks

Interactive, self-paced courses: short lessons, quizzes and code you run right in the browser.

int main(void) {
    char *you = "future C programmer";
    printf("Hello, %s!\n", you);
    return 0;

$ ./hello

Learn C

Learn the language underneath everything, one byte at a time.

15 lessons
24 code exercises
about 3.5 hours
Free

Start the first lesson See the whole track

JavaScript

const learner = "you";
console.log(`Hello, ${learner}!`);

$ ./hello

Learn JavaScript

Make programs respond, one clear step at a time.

6 lessons
6 code exercises
about 1 hour
Free

Start the first lesson See the whole track

HTML

  <body>
    <h1>Hello, web!</h1>
    <p>Your first page starts here.</p>
  </body>

index.html · page preview

Learn HTML

Give every page a clear structure, one element at a time.

6 lessons
6 page exercises
about 1.5 hours
Free

Start the first lesson See the whole track

CSS

  font-family: system-ui, sans-serif;
}

.card {

styles.css · page preview

Learn CSS

Shape the feel of a page, one style rule at a time.

6 lessons
6 style exercises
about 1.5 hours
Free

Start the first lesson See the whole track

Python

name = "you"
print(f"Hello, {name}!")

python main.py

Learn Python

Learn to turn clear ideas into useful programs.

6 lessons
6 code exercises
about 1 hour
Free

Start the first lesson See the whole track

SQL

SELECT name, city
FROM customers
WHERE city = 'Boston'
ORDER BY name;

query.sql · relational data

Learn SQL

Ask better questions of relational data.

6 lessons
6 query exercises
about 1 hour
Free

Start the first lesson See the whole track

NLP

from collections import Counter
words = "words make text".split()
print(Counter(words))

python nlp.py

Learn NLP

Teach computers to work with words, one useful idea at a time.

6 lessons
6 code exercises
about 1.5 hours
Free

Start the first lesson See the whole track

image = [[0, 40, 255], [20, 180, 255]]
print(len(image), len(image[0]))

python cv.py

Learn CV

Help computers find patterns in pixels and video.

6 lessons
6 code exercises
about 1.5 hours
Free

Start the first lesson See the whole track

Java

        System.out.println("Hello, Java!");
    }
}

javac Main.java

Learn Java

Build strong programming foundations with a language made for big ideas.

6 lessons
6 code exercises
about 1.5 hours
Free

Start the first lesson See the whole track

import "fmt"

func main() {
    fmt.Println("Hello, Go!")

go run main.go

Learn Go

Build clear programs and learn the language designed for simple concurrency.

6 lessons
6 code exercises
about 1.5 hours
Free

Start the first lesson See the whole track

Ruby

puts "Hello, Ruby!"

ruby main.rb

Learn Ruby

Learn an expressive language built around readable, flexible code.

6 lessons
6 code exercises
about 1.5 hours
Free

Start the first lesson See the whole track

Networking

destination = "learn.example"
address = "203.0.113.8"
print(f"{destination} → {address}")

python network_demo.py

Learn Networking

Follow data from a local link to the services that power the web.

7 lessons
7 code exercises
about 2 hours
Free

Start the first lesson See the whole track

System Design

daily_users = 100_000_000
requests_per_user = 10
qps = daily_users * requests_per_user // 86_400
print(f"~{qps:,} requests/second")

python design.py

Learn System Design

Prepare for system design interviews, from requirements to scalable architectures.

13 lessons
14 code exercises
about 4.5 hours
Free

Start the first lesson See the whole track

Coding Interview

    for i, num in enumerate(nums):
        if target - num in seen:
            return [seen[target - num], i]
        seen[num] = i

python solution.py

Learn Coding Interview

Master the patterns behind coding interview problems, from hash maps to dynamic programming.

13 lessons
13 code exercises
about 4.5 hours
Free

Start the first lesson See the whole track

Behavioral Interview

star = ["Situation", "Task", "Action", "Result"]
print(" -> ".join(star))

python story.py

Learn Behavioral Interview

Tell clear, credible stories about your experience - and close the process with confidence.

11 lessons
6 code exercises
about 3.5 hours
Free

Start the first lesson See the whole track

Offer Negotiation

base, bonus_pct = 160_000, 10
equity_per_year = 240_000 // 4
total = base + base * bonus_pct // 100 + equity_per_year
print(f"Total compensation: {total:,}")

python offer.py

Learn Offer Negotiation

Understand every part of a software engineering offer - and negotiate it with confidence.

10 lessons
5 code exercises
about 3.5 hours
Free

Start the first lesson See the whole track

AI Fundamentals

How AI actually works, from the math basics through machine learning, neural networks, computer vision and language models.

12 modules
Interactive demos
about 2 hours
Free

Start learning AI

At Tech World, we believe that software development knows no boundaries.

Our mission? To empower learners worldwide with the skills they need to thrive in the digital age.

Whether you're a beginner dipping your toes into code or an experienced developer seeking mastery, our diverse curriculum caters to all.

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Learn software development the practical way.

Our courses teach you in a very pragmatic way, instead of wasting time with unnecessary fluff.

Fulfill your dream of becoming a software engineer. Start learning today and jump right into action. No need for formalities. What are you waiting for?

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