Welcome to Eloqua and welcome to Topliners.
You can see if your company has a Oracle University pass that you can use. There are education tracks in there. More info here: Oracle University - Marketing Cloud Education
You can check out the power hour hub for some videos and power points on Eloqua functions and features. The content is old and still helpful. Power Hour Hub
You can check out the Know It area in Topliners too for information :Eloqu training
Finally, check out the Oracle Eloqua help center and read up on the different functions and features for Eloqua. https://docs.oracle.com/cloud/latest/marketingcs_gs/OMCAA/index.htm
Most importantly, keep coming back to Topliners, ask question, make post, and network with other Topliners!