I find Strat style guitars best to learn on. Wider sting spacing, passive electronics, lots of tonal variation, easy to maintain, no diddly locking nuts or Floyd rose trems, basic no-name ones are excellent value for money and they always look great in any setting.
I've always used Squier Strats because I know they always work and are always well constructed. It's also nice to know that if you want to experiment with different bridges and pups, you can!
Truckstop