# AddressBase Getting Started Guide

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These instructions show you how to get started with [AddressBase](https://docs.os.uk/os-downloads/products/addresses-and-names-portfolio/addressbase), [AddressBase Plus](https://docs.os.uk/os-downloads/products/addresses-and-names-portfolio/addressbase-plus) and [AddressBase Plus Islands](https://docs.os.uk/os-downloads/products/addresses-and-names-portfolio/addressbase-plus-islands).
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AddressBase products are created by bringing together different address sources:

* Local Authority Gazetteers across Great Britain, Northern Ireland, the Channel Islands and the Isle of Man
* Royal Mail PAF data
* References to Valuation Office Agency (VOA) data
* Additional addresses and coordinates from Ordnance Survey

The data is supplied as comma-separated values (CSV) or Geography Markup Language (GML). 

<figure><img src="https://1897589978-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FcNpJpLP8RROUaWVQo5ea%2Fuploads%2F7GK4xUY4FVHaeyUJnnvQ%2FAddressBase-4.png?alt=media&#x26;token=b38cae4e-d04d-485f-b36a-140ca1ee6f84" alt=""><figcaption></figcaption></figure>

This getting started guide shows you how to obtain a data supply, load and work with AddressBase data. It includes the following sections:

* [Prerequisites](https://docs.os.uk/os-downloads/products/addresses-and-names-portfolio/addressbase/addressbase-getting-started-guide/prerequisites)
* [Data supply](https://docs.os.uk/os-downloads/products/addresses-and-names-portfolio/addressbase/addressbase-getting-started-guide/data-supply)
* [Working with CSV data](https://docs.os.uk/os-downloads/products/addresses-and-names-portfolio/addressbase/addressbase-getting-started-guide/working-with-csv-data)
* [Working with GML data](https://docs.os.uk/os-downloads/products/addresses-and-names-portfolio/addressbase/addressbase-getting-started-guide/working-with-gml-data)
* [Working with COU data](https://docs.os.uk/os-downloads/products/addresses-and-names-portfolio/addressbase/addressbase-getting-started-guide/working-with-cou-data)
* [Creating a single-line or multi-line address](https://docs.os.uk/os-downloads/products/addresses-and-names-portfolio/addressbase/addressbase-getting-started-guide/creating-a-single-line-or-multi-line-address)
* [Searching for addresses](https://docs.os.uk/os-downloads/products/addresses-and-names-portfolio/addressbase/addressbase-getting-started-guide/searching-for-addresses)