Kentico CMS is delivered with detailed documentation. You can find all documentation here.
Quick Start Guide
Become familiar with Kentico CMS with this only 8-page long guide! Every page explains one feature step-by-step, illustrated with several images.
Tutorial
This document is intended for web designers and developers who start with Kentico CMS. It will guide you through the system and it will show you step-by-step how you can create a simple web site and build custom web parts.
Developer's Guide
The Developer's Guide contains detailed information on all aspects of system configuration, web development and extensibility. Web developers should use it as a reference book that will provide you with advice on how to achieve required results.
E-commerce Guide
The E-commerce Guide explains how to use the E-commerce module and how to build on-line stores with Kentico CMS. It's intended for web site developers and administrators.
Users's Guide
The User's Guide describes how to edit content and how to use Kentico CMS modules from a non-technical user.
Context Help
The context help in Kentico CMS provides a context-sensitve help for particular dialogs - it explains how to fill in particular fields, etc.
Kentico CMS Web Parts
This help file contains reference documentation of all properties of web parts.
Kentico CMS Controls
This help file contains reference documentation of all properties of server controls and it also contains examples how to use Kentico CMS server controls in your custom code (inside custom web parts).
Kentico CMS API Reference
This help file contains documentation of more than 40 Kentico CMS DLL libraries. You can use it to find appropriate methods when you need to script some Kentico CMS action or retrieve information from the system programmatically.
Kentico CMS Database Reference
This help file describes the database tables and their columns, views and stored procedures.