Written Spanish is relatively easy because, unlike English, each letter corresponds to only one sound. For example Spanish "a" will always have the sound /a/ as in the English word "apple".
The Spanish alphabet has 29 letters. Additional to the known English alphabet it also has: ch, ll, ñ, rr.
letter g has two sounds in Spanish: Soft sound like /g/ in the English word goat (e.g. gato)