As you begin your journey in SAP Cloud ALM, yes you can read Expert Portal and loads of Blog Posts but if you are short of time why not just finish a video series.
If you want to quickly understand the End to End Story then just watch this video.
If you want to go deep and use SAP Cloud ALM productivity then follow this sequence
Setup a Release and Deployment Plan
Deep Dive Requirement Management
Hope you find this useful.
Bookmark Expert Portal and YouTube Playlist