When you are learning a new technical skill, being able to practice in a simulated lab environment can be enormously helpful.
Microsoft offers an array of free hands-on lab environments:
Here you’ll find instructor-led labs and self-paced labs to help sharpen your skills on topics such as Azure Data Migration Services or SQL Server.
Other companies, such as Oracle (http://www.oracle.com/technetwork/systems/hands-on-labs/ovm-1908457.html) offer similar lab environments as well.
At Intellezy, we have a number of technical courses that can help you learn the skills you need to pass an exam. We just released a new course, Installation, Storage and Compute Windows Server 2016, which will help you prepare for Exam 70-740.
This course is designed to convey the knowledge and skills needed to work with Windows Server 2016. Key administrative responsibilities, such as implementing server images, planning and configuring storage solutions, and monitoring virtual machine installations will be covered.
Here is a sample from this course on installing and configuring server core: