From the excellent article below, which details the very restrictive law (unlike Portugal's much easier law): Spain's Jewish federation has received more than 5,000 requests for information about the Spanish law. For now, they are telling would-be applicants to start gathering family history as evidence, to consider learning some Spanish and to think about establishing a link to Spain, said federation president Isaac Querub Caro.The federation is also warning people the law isn't expected to become open to applicants until October, in order to give enough time to create the Spanish language and citizenship tests and set up a digital application system.