Multiple attempts to hack into my WP site.

I keep receiving a warning when trying to log into my site. WP gies me a warning that a host hastried mutiple times to log in, and so the account was blocked. I traced the IP address to Spain. I’m in Chicago. Hoping someone can tell me how to handle this.
The IP address they mention is 212.145.64.56. Kind of a newbie here, so hope someone can help.
Thanks,
Sam