I remember when i was younger (quite younger) my first digital project EVER was a similar counter with 3 digits. I used a perforated board (breadboards not available) and a ton of wire. I had of course no schematics whatsoever (internet not available as well). What i had though was 4 pages of an electronics related magazine with the pinout of the 4000 series CMOS chips, and a lot of determination to make it work.
So, I believe that this project is a brilliant start for beginners. Enjoy...