Which book should I purchase? Should I start with MQL4 or MQL5?
The choice depends on which version of MetaTrader you wish to use. There are important differences between MetaTrader 4 and MetaTrader 5.
MetaTrader 4 is the most popular and has a large existing code base of expert advisors and indicators. MetaTrader 5 has many new features that you may find useful, such as the ability to backtest with multiple instruments. Both versions of MetaTrader place orders differently, and the MQL4 and MQL5 languages are very different.
In short, choose your platform, then learn the relevant version of MQL.
What format is the eBook available in?
The eBook version is a PDF with chapters and heading bookmarks. It is viewable on any device. The file is not DRM-protected, although each page will be imprinted with your Paypal email address and transaction ID. The content in the eBook is identical to the paperback version.
What types of payment do you accept?
All paperback orders are fulfilled through Amazon US/EU/UK. The eBook version is fulfilled through eJunkie. They accept Paypal and credit/debit cards.
You can also ask your local bookseller if they can order any of our titles for you.
What is your refund policy?
Sorry, we do not offer refunds. If you have an issue with your paperback order, please contact Amazon.