I would kill to drop in a "Chemelec, drop $5 in with the board and I will take it". But nice to see you are working hard to get going and Chemelec making that very nice offer. That is a great first project.
So you will now have a power supply board and need parts for it. Sure that is all on the website (parts list). Maybe you will get all the parts too, but not soldered in.
One way some start out is if you see old (broken) items with circuits, grab them, get a solder-sucker (my name for a de-soldering tool) and remove parts from old boards. Last night I pulled a bunch of 4V relays for fun. Old emergency lights, I thought 4V relays were odd but 3 x AA batteries and a circuit, I might use them one day.
In no time you will have all kinds of parts.
Then you might get married and have to hear about it over and over.
Do we really need all these "THINGS"?
Just say "YES" and smile