mp20 is looking to take a more active role in Osmosis QA work. The first step is deploying validator and nodes on the testnet and also providing a testnet snapshot service for quick sync. This will shorten the onboarding time frame from days to 45 minutes. Have a look at the WIP osmosis documentation on how to deploy on the testnet, the best place to start if you are interested in validating on Osmosis.
Czarcas7ic and Dan have been doing fabulous on the Osmosis documentation site.