ok. I think i will answer every question one after another.
1.Why no voiceover?:
English is not my native language,. Since i have seen LOTS of video tutorials, where really bad pronunciation can ruin it all. And those official tutorials are from big companies like xilinix, altera, cypress etc. I always question myself why did they let this chinese/indian/korean girl/boy lead a tutorial.
That is why i decided to caption version.
Caption have also some advantages: you can place syntax there, write small examples, and overall you can always press space bar to pause the video, read what i "say" then read compare to my program.
Moreover if the viewer is also not native English speaker(which happens on youtube quite often), he/she will understand these tutorials much better.
2. Why VHDL?
I live in Germany. Everyone say that verilog is more common for USA/Australia, but in the rest of the world VHDL is more used.
As for me, i just like VHDL more, it si more self evident then verilog with his wires, always, etc...
3. Why no simulation?
In my tutorials I used simple codes like a few CASE and IF statements. You don't need a simulation for such easy stuff. Moreover i didn't want to overload the tutorial with simulations. The goal of my video were to show basics or how does procedure/function works. Sure more complex programs must be simulated, but for now it wasn't necessary.