$filter: The expression specified with $filter is evaluated for each resource in the collection, and only items where the expression evaluates to true are included in the response.
serviceRoot/People?$filter=FirstName eq 'Scott'
$orderby: The $orderby system query option allows clients to request resources in either ascending order using asc or descending order using desc.
$count: The $count system query option allows clients to request a count of the matching resources included with the resources in the response.
$select: The $select system query option allows the clients to requests a limited set of properties for each entity
$top & $skip: The $top system query option requests the number of items in the queried collection to be included in the result. The $skip query option requests the number of items in the queried collection that are to be skipped and not included in the result.
$expand: The $expand system query option specifies the related resources to be included in line with retrieved resources.