My sister had the first few Animorphs books - 1-12 - and I got more into it than she ever did.
That' pretty much how I got in to the series, my younger sister started requesting the books when we were like in Middle School and I picked them up for her since they always seemed to come in when I was at the library~
though, my older brother was the first person to ever get in to the series when it first came out. But um, I was like four or five then, so my reading level and my maturity wasn't high enough for Animorphs lol. Buut, when I first read it, I remember thinking:
UUUGGGHHH, SCI-FI, BOOOORRRIIINNGGG. Pretty much same way when I first heard of the series too.
Though I fell in love with the series later when I got bored at home and picked up one of the books my sister was so obsessed with. xP I read # 14 first and actually went "wowzers, a main character WHO'S BLACK? NO WAY", aaand, that's all I remember. I think I kept going from fourteen for a while and then went back and read 1-13 and was all "Ohhhhhh! Now it makes sense!" XD