The IsHome method on a Page object returns true if the [page kind] is home.
content/
├── books/
│ ├── book-1/
│ │ └── index.md <-- kind = page
│ ├── book-2.md <-- kind = page
│ └── _index.md <-- kind = section
└── _index.md <-- kind = home
{{ .IsHome }}