There are only two tutorials in v5 tutorials category. His and Mine. Here is a link to his:
Here is a link to his punch editor tutorial as a supplement to his basic clock.
PS: Me and Q are the only two that has built a time clock or put any effort into it. So it should be easy to find them
Our basic system works almost identical. It works very well and honestly I see no need to invest in third party software unless you want full complex payroll.
You could even make an Entity Screen and use Badges to swipe to clock in and out with. It would be the most basic form of time clock.