Random all the way.

Random so you an learn the basics naturally.

Originally posted by Kalysm:

Random all the way.

Ok, also i made a world a long time ago. should i make a new one or doesnt matter?

As said, Random
Nothing beats the feeling of new world :) but do as you will

Make a new one so you can get used to starting from scratch because you might have to a few times with updates.

There are plenty of tools out there that can make a random seed known later if you want, so it's the best of both worlds.

Heared old generated worlds may be unstable so make a new one and bring some stuff from old if needed.

Random. No Google. No spoilers. No cheating.

Random.