Newbie Zipline tips?

DS1: DC edition

As the title suggest, I'm looking for some newbie zipline tips.

Mainly for actual starting points. I get using other players ziplines to conserve bandwidth, but with the sheer freedom of placement... I'm really at a loss of where to even start.

Also, once I do start, how do I know where to place the next one? Will theap give me a radius of where my first point will reach?

I have a fear I'll start building and then place them too far apart, or too close to not be efficient.

And I like riding my trike on the roads - will I still be able to rebuild the roads if I start making ziplines everywhere?