No Disneyland is never free. Disneyland right now is closed. However it will reopen on April 30th for California residents only. But if you want to get some of that Disney magic. Downtown Disney is open. Downtown Disney is free, however parking is $10.
I would also add to Christals answer by saying you can also park in local hotels on harbor Blvd across the street from Disneyland (Tropicana, Best Western Park Place Inn and the Anaheim Hotel) for $10-$15. Gates over there open at 9:45am. DTD opens at 10am
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