HElP!! How do you say écris when before it says tu and the other one il/elle?

Any french speakers? i need some . how would i say 'my oldest brother is very tall, interesting, and good at drawinng.' in french? would it be: mon (i don't know the french word for oldest) frère est très grand, intéressant, et bon à dessin. also, how would i say 'my dad is good at his work' in french?

Translate this to french: hi xavier! how are you doing? i have been taking math and english classes lately. they are both in the afternoon. today i went to dance, and it was fun. till next time!

How do you write i/he/she went to *blank location* in past tense in french? like. how do i say something like i went outside yesterday, or my friend went to the store yesterday? i really want to understand this, but none of the websites i use are really doing a good job at explaining it