Ivan Pepelnjak, an internetworking veteran and author of numerous Cisco Press books and advanced technical trainings, together with dozens of other authors created a series of webinars, workshops and online courses covering advanced and emerging internetworking technologies, from data center technologies to overlay networking, software-defined networking and network automation.
Most students start with ipSpace.net subscription that includes access to all webinars, some of them decide to invest more effort into completing instructor-led or self-paced courses, and if you have at least ten students it's always possible to schedule an on-site workshops.
Below is the list of currently available webinars – you get all of them with ipSpace.net subscription