Similar to my own introduction to music. My two older Brothers definitely sped up my enjoyment of good old rock and roll.
Still, my first albums were The Chipmunks and Elvis (Aloha From Hawaii Via Satellite), Around age 10.
By the time Aerosmith hit the scene, I was in High School. But I remember pulling into the school parking lot in my '72 Duster with Aerosmith blasting on my Pioneer tuner/cassette, 3 (yes 3) pair of Jensen Triaxle 6 x 9 speakers powered by my Rockford Fosgate "The Punch" amplifier. That however would have been around the time of Toys in the Attic. I thought "Big 10" was so clever. Kids!
My first favorite albums were bands such as Procal Harum, Three Dog Night, Blue Oyster Cult, Elton John, Bowie and such.