I started by making my first plane, Sapphire, with a partner making an identical Ruby.  These are the Flitetest Simple Cub.  We started with their laser cut kit, which was a nice time save and way to start.

Current state:

Being my first, I learned on it, at first and a 3 channel.  It also meant I crashed and broke it a lot.  Each time wasn't too bad to fix, usually just glueing it back together.  The only pieces I replaced was the vertical stabilizer and twice the motor pod.  

After some time I added ailerons as well for 4 channel.  I really wish I'd built it with ailerons in the first place because bank and yank is so much more natural to me. 

These were great first planes, and good to learn on.  I don't fly Sapphire as much now, but still fun and quite flyable today.

Construction in progress:

Later adding ailerons:

Replacement motor pod (probably the second one):