Here are some of the places that will help you in your development activities.
The community site for developers where you can access, leverage and contribute valuable information and knowledge at any time. The knowledge, systems, and membership that are EDN exist to enhance the effectiveness of your day-to-day job performance, enrich the career of anyone involved in systems development and management, and extend the breadth and depth of our industry.
Embarcadero Community Website, with news and articles.
Embarcadero Certification allows you to distinguish yourself from all the other professionals in this increasingly competitive marketplace. Whether you are just starting out or are a veteran of many projects, Embarcadero Certification demonstrates to an employer or a potential customer that you have what it takes to get the job done.
Study Guide for Delphi Certification
They have a number of e-books as resources (I believe you get Marco Cantu’s ebook with license upgrade), Nick Hodges E-book is greatly spoken about.
Also projects interfacing to the Internet of Things, Arduino projects etc.
Alister Christie’s excellent Training site.
“LearnDelphi.tv is the Internets premier site for instructional video on using Delphi. Since about 2007 I’ve been producing free video tutorials on using Delphi. More recently I’ve created a series of commercial videos which provide amazing value for money. While aimed at beginners, even seasoned Delphi users should find the content useful.”
For 14 years, this web site has provided help and reference for the fundamentals of the Delphi© language. It gives an introduction to the Delphi Object Oriented Language for newcomers, and provides a ready reference for experienced programmers.
It limits itself to a broad base of the language in order to keep things simple and manageable. The approach taken is to present the most useable basics of Delphi Programming in as accessible a manner as possible.
There is a YouTube channel with webinars code snippets
Please see below “A VCL Developers Guide to FireMonkey by Robert Love from CodeRage “
Doc-Wiki for RAD XE8 (gives you codes and explains the functions)
RAD Studio, Delphi XE8 Various Resources and Android and iOS Code Samples