I just heard about Kolibri and would like to work with some schools in Lagos but i know nothing about installing, and deplying it..Would we need to get teachers trained?
Welcome to the community! Great to hear about your plans to work with schools in Lagos 
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Kolibri can be installed onto a variety of devices and operating systems. For recommended architectures for multi‑school offline deployments, Our hardware guide gives a sense of what technical components are needed for set-up and configuration for different implementation models. You can also see a list of possible device types. Our full set of documentation shares more about installation and using Kolibri including best practices for content distribution and synchronization. To direct you towards the resources in our Kolibri Edtech Toolkit that may be relevant for your needs, I encourage you to utilize our Kolibri Wizard.
On your question about teacher training, our Kolibri Edtech Toolkit is available for you to run your own training with teachers directly, giving you everything you need to facilitate sessions independently.