Speaking in Spanish can be really simple, whether you're a beginner or not, anyone can! Just fix the way on how you pronounce Spanish words a bit and you're good to go!
Now, to say "Hello!" is Spanish may be a bit confusing for a first-timer. In Spanish for "Hello", you say "Hola!". But although the word is spelled with an "H", you don't simply prounounce it the way it is. In "Hola", the "H" is silent. Therefore it should sound like "Olah!" instead of "Hola!"
Glad to be in your assistance!