Is this old tutorial still workable?

Sup. I’m new as hell to lua coding and am trying to start out lua and am currently trying to do a gamemode. Problem is there’s a lack of tutorials and the best tutorial I’ve found is for an older version of GMod.

Basically, is this tutorial still workable? The code format seems very similar, despite a lack of ;'s (which I presume I’d have to add?) and some formatting, but can it still be used with some adjustments?

Yes, should be.

In Lua you don’t need ;'s. It’s the same as a whitespace.
You don’t need to format either. Whether you use tabs or you don’t does not matter