What's The Best Learning Platform For Start-Up Teams

Hey everyone, Alex the founder of Virti and Shiken (ed-tech). I'm after a quick opinion on what you've used to help get new hires up to speed on how you do things remotely when working as a small team. At Virti we ended up recording lots of video-walkthroughs and then self-hosting them to reduce employee ramp time. Interested if anyone is using anything specific or if you're using things like Kahoot! for engaging or upskilling employees regularly.