Questions & Answers about Él habla inglés y yo también.
Why does Él have an accent mark?
The accent mark distinguishes él (he) from el (the). They sound exactly the same when spoken, so the written accent simply shows that the word means he in this sentence.
Why is the word for English (inglés) written with a lowercase letter?
The English translation says so do I, but how does yo también actually work?
Can I drop the pronouns él and yo like I normally do in Spanish?
It is much more natural to keep them in this sentence. While Spanish normally lets you drop subject pronouns, they are kept when comparing or contrasting different people to make the contrast clear.