The more you learn the easier they get, and Spanish is probably the easiest language for an English speaker to learn so perhaps start there?
Also they say the best way to learn a language is to immerse yourself in the language so get a spanish speaking boyfriend or girlfriend and get immersed!
One thing I always find fascinating is where words come from. If you can link the genealogy of words, then you will find learning french/spanish/portugese/german and so on a lot easier. A lot of words have come to english via old french which is via latin. Also a lot of english words have germanic roots. In fact English is very adept at integrating other languages into itself, so we have a headstart at learning those 'cousins' to English.