First of all, which do you like more? Start with the one you like more, then learn the other for added versatility. I prefer to be adept at both, even if I'm mainly an electric player.
Either way, learning one will make learning the other easier, even though both are quite different. And for electric, you can choose not to use effects. I don't use effects in my playing, only clean and dirt tones. So technique-wise, it's about keeping it simple rather than strictly acoustic first, electric second. In my opinion. Yes, many electric players use lots of effects, but it's a choice.
But, I tend to recommend starting with the acoustic because acoustic is physically a bit more challenging to play, so it's a bit better at helping your fingertips develop additional hardness (calluses) so playing will become less painful over time. Acoustic is also a bit cheaper to begin with, at least as far as buying the guitar and equipment goes.