I've been cosplaying for like....8 years now? Wow. I would recommend starting as I did, someone who is easy to make and already looks like you. Also, more importantly then those, ACTUALLY LIKE THE CHARACTER. It's weird that I would have to say that but too many newbies go on cosplay forums just asking "who do I look like, who should I be?" Obviously it should come from your own interests first. My first costume satisfied all three requirements, I was Lupin the 3rd. Gradually got into more difficult costumes over time.
Oh, and my avatar is a pic of me cosplaying as Dark Link from Zelda at Otakon
Oh, and my avatar is a pic of me cosplaying as Dark Link from Zelda at Otakon