I've created a number of Splunk tutorials and videos that you might find useful:
Installing Splunk on a Linux VM
Splunk Infrastructure Design and Sizing
Splunk Storage Sizing
Separately, I've also put together a training class that will get you started with some common Splunk administration work, including building a Splunk instance, onboarding data, using apps on the common information model, and doing some basic searching and reporting work. It's not a replacement for the Splunk classes, but should provide you with enough experience to get started with using and administering Splunk.
Let me know if you have any questions. Good luck with learning Splunk!
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