Prepaid SIM Card?

[al76slc]

I'll be where it will be helpful to have a cell phone for a week. Can I buy a prepaid SIM card for use for a week? Are these things universal? I don't need to make overseas calls or anything; I just want to have phone service for a week.

I have a perfectly functioning cell phone except the service contract lapsed.

I'm basically cell phone incompatible, so please work with me and explain to me like I'm a 5 year old.

Thanks