Hi @deeby
If you don’t have current access, a good starting point is LinkedIn Learning’s Adobe Analytics courses by Eric Matisoff, they include a sandbox so you can practice reporting and segmentation hands-on.
https://www.linkedin.com/learning/adobe-analytics-essential-training
Next, explore Adobe Experience League, the Analytics playlists and tutorials there are excellent for a quick refresh -
https://experienceleague.adobe.com/en/playlists?solution=Analytics&role=User
You can also join Adobe Analytics User Groups and the Analytics Champions Office Hours for real-world Q&A with practitioners -
https://analytics-augs.adobe.com/
If timing works, the Adobe Skill Exchange is coming up soon and has multiple free sessions on Analytics.
Even without access, you can learn a lot by following forum discussions, seeing how others solve problems, and trying to replicate their logic in the sandbox or using public site tracking as examples.
Hope this helps!