Welcome to the family young blood. The greatest thing about this sport is that we are a club, and not just a team. In time you'll begin to see exactly what that means, and in that time you should do some research into the storied history of Arsenal, and into the values (every club is different). Learn what the motto is and take it to heart. When you wear the badge you should know what you're representing.
Some great places to start would be the 03/04 season. The film 89 about Arsenal away at Anfield (Liverpool's stadium), and the book [Fever Pitch](fever pitch https://www.amazon.com/dp/1573226882/ref=cm_sw_r_cp_apa_i_s5PADb9ME5EBJ) by Nick Hornby.