Some phrases that you'll want to keep in the back of your mind if you travel in a Spanish-speaking country, just in case:
Me he perdido - I got lost
Estoy herido - I am injured
Me duele - I am in pain
Necesito ayuda - I need help
No lo entiendo/No lo compriendo - I don't understand
¿Hay aquí alguién que hable ingles? - Does anyone speak english here?
Some basic manners:
Por favor - Please
Gracias - Thank You
De nada - You're Welcome
No hay de que - Don't mention it (as in the sense of "you're welcome")
Mucho Gusto/Encantado - Pleased to meet you (when used after meeting someone)
You'd also stand to learn some pronounciation.
a is pronounced like the a in father
e is pronounced like the ay in day
i is pronounced like the ee in see
o is pronounced like the o in no
u is pronoucned like the oo in boom
Vowel combinations can make different sounds than those, but those are the basic vowel sounds in spanish. There are some consonants that are pronounced differently than in english, but I would not be able to get into them all in this post, but some basic pointers are:
c is pronounced as a k when it is infront of an a, o or u, and is pronounced as either an s or a th (depends on the region) when in front of an e or i.
qu is pronounced like a k when in front of an e or i, and pronounced similarly to its english pronounciation when in front of an a, o or u. So que is pronounced "kay".
ll (two ls in a row) are pronounced like a y.
ñ is pronounced like "ny".