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Several development tools are available that can be used to customize and create integrations for Microsoft Dynamics GP. If you are looking for Dexterity customizations, complex GP add-ins developed using the VS Tools, GP Tables and resources information, some VBA code reference for some problem you are facing or information about Development SDK.
If you are getting started with Development in Dynamics GP, here’s a fantastic post by MVP David Musgrave for Choosing a Development Tool. In this post he explains some points to think before choosing your Development tool with so many options available to integrate with or customize the application.
Here’s another post from David that highlights some development tool based White Papers which are available for download from Microsoft Downloads will be helpful to get you started with Development.
In the Dexterity sub section, you can find helpful posts to get started with Dexterity, deploying chunk files after creating them with Dexterity, what new has been released in the Dexterity with latest GP offerings. This post by MVP David Musgrave Dex-How to get started with Dexterity will get you started. Another great post from him lists Some Dexterity Samples available at PartnerSource and CustomerSource for download. You can see post about Dexterity and IntelliSense by MVP Mariano Gomez. In the post he explains how intellisense can be made possible with Dexterity. There are some other very useful articles for Translating Dexterity Code and Translating Dexterity Applications Series by MVP David Musgrave. In this fantastic post, Mariano Gomez shows Calling SQL Server stored procedures from Microsoft Dexterity. There are some excellent posts by David Musgrave - Writing Multi-Lingual Dexterity Code, Checklist for creating a new Dexterity Window, Understanding Cross Dictionary Dexterity Development, Any Font in the Dexterity Script Editor. And then there are some fantastic posts by Mariano Gomez - Sending emails with Collaboration Data Objects (CDO) and Dexterity, All about the Dexterity OLE Container (how Microsoft Dexterity OLE Container is used from GP). If you are looking for Limitations of Dexterity Table Triggers, this post will be very helpful.
Under the SDK/Developer Toolkit sub section, you can find posts related to Software Development Kits releases, documentation related to the toolkits, some developer toolkits samples. You can see post about Dynamics GP 2010 Developer Toolkit Documentation posted by Steve Endow, Great Plains 10 SDK - Free Download by David Patrick.
In the Tables Information sub section, you can find posts related to finding tables and fields information in GP. You can see post for Finding Table and Field Information in Microsoft Dynamics GP by David Musgrave, Bank Rec / Fixed Assets / POP / SOP table information by Vitoria Yudin and one by Jivtesh shows Finding data in a Database of 1000+ Tables in Dynamics GP.
In the Testing sub section, you can find some useful articles about the testing framework available for GP. You can see post for Testing Framework for Microsoft Dynamics GP Available by Alice Newsam, Testing Framework for Microsoft Dynamics GP now available for download by Mariano Gomez.
In the VBA sub section, you can find posts about changing the appearance of GP windows, adding new or hiding data fields or controls from GP windows, adding new business rules using VBA with Modifier. You will also find some helpful posts about the deployment of VBA code and some common issues and best practices that have to be followed. You can see a nice little post Welcome to Dynamics Example by David Musgrave that will get you started with VBA. Some useful posts about the installation VBA add-ons like How To Install Dynamics GP VBA Addon by Matt Landis and How to edit VBA when the client only has customization site license by Andrew Hall can be found under this sub section.
In the VS Tools sub section, you can find posts about installing Visual Studio tools, modifying a GP form using VS Tools, and adding new business rules in GP. To get started with the VS tools you will find some very interesting posts by Mariano Gomez Getting started with Visual Studio Tools for Microsoft Dynamics GP -- Adventures of a Microsoft Dexterity developer, Getting Started with VST: WinForms and Controls. And then there are some great articles from Patrick Roth in which he explained How to Modify the Home Page. Another great example by Mariano where he uses VS Tools to display Amount in Words on SOP Entry window. Dave Dusk points out some Performance Issue in VS Tools that might be helpful while planning for using VS Tools.