If you want to come to Madrid take into account:
Currency: In Spain the currency is Euros €.
Health-COVI19: Wearing masks is important now. Is mandatory in metro subway and public buildings.
Transport: Madrid has a good public transport. If you are under 26 years old, you just have to get the transport card and to pay 20€ for using all public transport (buses and trains) for 30 days. This is the website to book an appointment and get the card:
https://tarjetatransportepublico.crtm.es/CRTM-ABONOS/entrada_ttp.aspx (Is in Spanish, so you should translate it into English with google)
Food: Usually is cheap. In Madrid you can find restaurants and supermarkets with a broad range of prices.
Language classes: If you want to learn Spanish we recommend you Paraninfo Academy, located in the centre of Madrid. Follow this link to visit the academy: https://www.paraninfo.com/en/
Accommodation: Prices varies depending on where you want to be in Madrid. Prices for a room with basic services included (also internet), varies from 350 € till whatever you want to pay. You can stay 40 or 50 minutes from the centre of Madrid and maybe find a room for less 350 €. If you are under 26 years old, you won’t spend a lot of money commuting.
When booking a room, we recommend you not to make big deposits in advance. Pictures may also be fake in important websites. Therefore, try to make sure and find trustable agencies and landlords.
Here are some websites useful to find a room in Madrid: