v5 has completely revamped how symbols, footprints, and libraries are managed. The changes are VASTLY for the better, except it obsoleted a lot of community contributed documentation. Yet it's still worth it.
I'd create a test project, then just experiment with it. Create a schematic, create a symbol, add it to the schematic, edit the symbol to see how it updates the schematic. Press "E" on the component, find the footprint location, pick a footprint. Or go back to the main project navigator (the initial window) and run the footprint editor to create a new footprint. Just poke around, WITHOUT also trying to design anything at the same time. Learning PCB design and learning KiCad are two different things entirely. Press F8 to copy the schematic info the PCB and edit a PCB.
Again, just poke around, do stupid things, see how things work. How to select and work on groups of parts. Invest time in it. It's really not hard, you just have to give it a little time to become familiar. Learn the keyboard shortcuts.
Poke around with gerber generation (the plotter button in the PCB editor). Get a gerber viewer (ZofzPCB is excellent if you're on Windows) and see what you produce.
Make sure you understand what each of the standard layers are for, how to run DRC, zones and zone fills, look up new terminology if you're totally new to PCB CAD (terms like annular, fillet, width & space, net class, zone, fill, via stitching, courtyard, keepout, track coupling, stackup, escaping a footprint, rat's nest, push & shove, etc etc etc). It's an entire world unto itself.