While Wyam is certainly still usable, it's been rebranded and rebooted as Statiq with a ton of improvements. You almost certainly want to look there unless you're already a Wyam user.
Recipes and themes make it easy to quickly generate different kinds of sites. Try a blog or docs to get started.
Use a configuration file to customize your generation process with tons of modules or your own code.
Embed the Wyam engine to add the power of static generation to your own applications.
The easiest way to get started is to install as a .NET Core global tool and use a recipe and theme.
1. Download and install Wyam as a global tool:
dotnet tool install -g Wyam.Tool
2. Scaffold a new blog:
wyam new --recipe Blog
3. Edit the scaffolded files.
4. Build the blog with a theme:
wyam --recipe Blog --theme CleanBlog
To go deeper, read more about the underlying concepts and then read about configuration files and the available command line arguments. Then check out the full list of modules.