[Rusty]

Reading in Spanish will certainly be enriching. The "hard" words in English will most likely be cognates (or "friends") in Spanish, so you'll have no problem recognizing them. Just remember to use proper Spanish pronunciation when you encounter them. And that will be the least of your problems, because all words in Spanish follow strict pronunciation rules, unlike English.

Let's have a look at the word 'paleontology,' which is 'paleontología' in Spanish.

In American English, the phonetic pronunciation is /pey-lee-uhn-tol-uh-jee/.

In Spanish, the pronunciation is similar to /pah-ley-ohn-toh-loh-khee-ah/. Spanish pronunciation is simple. Its vowels are pure.
(The /kh/ in the pronunciation guide is the /ch/ found in Bach (the German composer), when said correctly by the host of a classical music radio station: /bahkh/.)