Verb conjugation of "interesar" in Spanish

My wife an I have decided that as long as our children were small and would not have to go to school we need to take advantage of our freedom and travel as much as possible. Later this year we will go to Costa Rica.
You have to be careful when you go on summer vacation. There are many dangers but the most dangerous one is the sun itself, because if you're not careful it may harm you. People underestimate the rays.
Do you speak three languages? Wow? I'm sorry that I am writing to you just now but I have a lot on my mind at the moment. My daughter had a cold and the nanny, too. I needed to stay home.