Where to find the mod kit

My brother got Black Mesa and he really wants to get into the mod kit that comes with the early access, where can he find the tools?

I believe TextFAMGUY1 is currently putting together a guide on the new tools, just keep a look at!

There is a temporary guide available here.

Isn’t the configuration already set up out of the box in the Hammer that comes with Black Mesa? Well, at least for basic mapping.

Yep, you just need to point it to the FGD.

Really? It seems to work without having to add additional FGDs.

Founded in 2004, Leakfree.org became one of the first online communities dedicated to Valve’s Source engine development. It is more famously known for the formation of Black Mesa: Source under the 'Leakfree Modification Team' handle in September 2004.