# Building Apps with GORM

This is the traditional way to write GNUstep apps. You should start with [Convertor](2_Convertor/2.1.md), and then you can either go through the rest of them in order, or you can look at the topics below to see what you'll learn from each.

[**👉 Let's get going!**](2_Convertor/2.1.md)

**Prerequisites:**  
* Basic knowledge of the command-line
* Basic knowledge of programming concepts
* A desktop computer
    * If you're willing to tinker around, you could use a tablet with the Termux or iSH apps, or a jailbroken e-reader, but we don't have any instructions yet.

```{toctree}
:maxdepth: 2
:caption: Contents
:titlesonly: true

1_Intro/index.md
2_Convertor/index.md
3_TimeMachine/index.md
4_Money/index.md
5_Overview/index.md
6_LunarCalendar/index.md
7_NSLookupService/index.md
HelpfulWebsites.md
```

## 1 - Objective-C Intro

[Read it here](1_Intro/index.md)

## 2 - Convertor - a basic app

[Read it here](2_Convertor/2.1.md)

Build your first app, which multiplies two numbers! It's intended to convert currencies given the conversion rate.

This guide introduces you to the GNUstep IDE, which is composed of **ProjectCenter** and **Gorm**.

Topics:
* Using ProjectCenter
* Using Gorm
* Using AppKit, Foundation, and the Objective-C programming language

## 3 - TimeMachine - custom views

[Read it here](3_TimeMachine/3.1.md)

Topics:
* Updating your UI
* Custom Views
* Drawing custom shapes
* Dynamically creating widgets
* Modal Windows
* Configuring your app
* Notifications

## 4 - Money - a document-based application

[Read it here](4_Money/index.md)

Topics:
* Document-based applications
* Tables
* Loading and saving
* Drag and drop

## 5 - Overview - outline views

[Read it here](5_Overview/index.md)

Topics:
* Outline views
* Getting system information

## 6 - LunarCalendar - matrices

[Read it here](6_LunarCalendar/index.md)

Topics:
* Custom views
* Matrices

## 7 - NSLookupService - services

[Read it here](7_NSLookupService/index.md)

Topics:
* Services