You can use the select method when you want to list records from a table, as follows:
$database->select('user', [
'uuid',
'name',
'slug',
'created_on',
'updated_on',
]);
The select method gives you a list of records. If you just want to select a specific row, you can use the get method, as follows:
$database->get('user', [
'uuid',
'name',
'slug',
'created_on',
'updated_on',
], [
'slug' => 'jane'
]);
If you want to find out more details, visit https://medoo.in/api/select for the select method and https://medoo.in/api/get for the get method.