[3] He took his basic education at the Tajamar School, a centre for males linked to the Opus Dei[4] located in the current district of Puente de Vallecas.

From 2004 to 2008, Garrido was also a member of the Executive Secretariat of Regional Policy of the People's Party of the Community of Madrid, where he befriended Cristina Cifuentes and Jaime González Taboada.

[11] After the 2015 election to the Assembly of Madrid in which he ran second in the candidature of the People's Party after Cristina Cifuentes, he was assigned to negotiate the investiture of the later as regional president with Citizens.

[16] After the celebration of the regional Congress of March 2017, he was elected at the Comité Ejecutivo Autonómico of People's Party of the Community of Madrid, presided by Cristina Cifuentes as Secretrary.

[17] On 25 April 2018 Cifuentes resigned as President of the Community of Madrid, after the release of a 2011 video that shows her being detained in a supermarket for shoplifting,[18] and in the wake of strong evidence that her Master's degree was fraudulently obtained.