Just moved to Houston. Trying to learn more

Just moved to Houston from Philadelphia. Though it is Eagles town I never really liked football. I for some reason liked all the Texas teams since I was little. I’m trying to get into football because all my new friends in Houston love the Texans but mostly the cowboys. I’ll never become a cowboys fan because of my hometown. I’ve been trying to learn more about the Texans and mostly their players but I want to know most of the starters and what positions we are strong and weak at. Things I know. Franchise QB, two decent runningbacks who they switch between. Improving receiving core though Hopkins needs to go back to himself. Much improving Oline even though in past season it was bad. Defense. I barely know anything except that Dline used to be elite but injuries and trades have plagued. Also that many CB injuries have plagued them but Robys back. I know nothing of the safeties and linebackers. Any stuff I don’t know, can someone please tell me so I can know a decent amount of things for watching the playoffs with my new friends? Thanks!!!!