I recommend using this product (Splunk Enterprise) for the fundamentals I course, it gives you a 60 day trial vs. 14 days with Splunk Cloud
download and install from here :
https://www.splunk.com/en_us/download/splunk-enterprise.html
If you prefer to use Splunk Cloud, it sounds like you may not have added any data, here is the documentation on how to accomplish that.
https://docs.splunk.com/Documentation/SplunkCloud/7.2.6/Data/Getstartedwithgettingdatain
Cheers,
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