I first started playing back in season 2 and i remember seeing all these champions and i was like, Dude who should i get first. My buddy was all, just go with what your heart tells you. I then looked at all the awesome champs and i was all,I wanna burn some mother fuckers 
[zombie-brand-mindblown]
was a fiddle main for the longest time
I saved up and bought her. It was a struggle but it payed off well. She helped me carry many games and made me learn the support role.
The very first champion I actually bought: Warwick, because I saw he had lifesteal so level 1 me thought that would help (it didn't do much when I sucked)
First champion I bought that I actually figured out how to play well: Katarina (also the first skin I got and the first skin I actually spent money on)
Started all the way back in season 2. Played Vayne for most of that time, and she is still my main today. :p
I started during the days of Zyra (what season?), and bought 
first. Heh...funny, her sticker is champion:1, and she was my first.
[slayer-jinx-catface]
<3