What is Programming?

Programming is the act of giving instructions to a computer. That's it. Every app on your phone, every website you visit, every video game you play—they're all just sets of instructions that someone wrote down.

The catch? Computers are incredibly literal. They do exactly what you tell them, nothing more, nothing less. If your instructions are wrong, the computer won't figure out what you meant. It'll just do the wrong thing.

Computers Are Very Fast Idiots

A computer can perform billions of operations per second, but it has zero intuition. It can't "figure out" what you probably meant. This is actually good news: once you learn to speak its language precisely, you have an incredibly powerful tool that will do exactly what you ask, millions of times, without getting tired or bored.

What Does Code Look Like?

Here's a simple program that calculates the tip on a restaurant bill:

bill = 50.00
tip_percent = 0.20

tip = bill * tip_percent
total = bill + tip

print("Tip:", tip)
print("Total:", total)

When you run this, the computer reads each line from top to bottom, does what it says, and outputs:

Tip: 10.0
Total: 60.0

That's a complete program. Four lines of actual logic. You just told the computer to remember some numbers, do some math, and display the results.

Why Learn to Code?

• Automation: Make the computer do repetitive work for you
• Problem solving: Break complex problems into simple steps
• Career opportunities: Nearly every industry needs people who can code
• Understanding: Know how the technology around you actually works
• Creation: Build things that didn't exist before

Why Python?

We're going to learn Python because it's designed to be readable. Look at the code above—even if you've never programmed before, you can probably guess what most of it does. Python reads almost like English.

Python is also incredibly practical. It's used at Google, Netflix, Instagram, and NASA. You can use it for web development, data analysis, artificial intelligence, automation, and yes—algorithmic trading.

How This Course Works

Each lesson builds on the last. We'll start with the absolute basics—variables, simple math, making decisions—and gradually build up to writing real programs that do useful things.

The key to learning programming is practice. Don't just read the examples—type them out yourself, run them, break them, fix them. That's how the concepts stick.