Advice for a wannabe DM

I have been lurking around for a while and still oh the hunt for people to game with, however with lovely social anxiety and a lot of the games/groups being state side things are moving slowly, but we are still progressing. However, as I look over rule sets and read up on wonderful worlds, i have had an apostrophe (thumbs up if you get the reference), I would like to try my hand at world building and creating my own campaign that is some epic adventure in my head. so advice from seasoned DM's is requested, when writing your own adventures and campaigns do you write every specific detail, if there is an inn keeper, do you know exactly what they know, who they know, what information they have down to the finest detail. Or do you leave things more free flow, only having the basic outline of what npc's might know, so hopefully being less player-break proof.

I have a meta-plot that I stick to, the day to day stuff is often generated by the players. They decide where they are going with some subtle or overt urging from the NPCs. I tend to make things simple and as time goes on, layer additional details as needed. Mike the bartender is one dimensional until they ask him a few questions and he relates that he used to be a soldier, then it is revealed that he was at the battle of Riga eight years back, finally, yes he did serve with Boris the Black and saw him when he was pulled into the river just south of the Ogre bridge and no the body was not discovered nor was his famous battle axe...

This doesn't pertain directly to Roll20 so it is off topic for these boards and a Mod will no doubt pop by and remind you of this, but in the spirit of the friendly support that I think characterises the community here I'll PM you a link to resources I have found most useful and inspiring.

This thread is off-topic for our site. When you signed up for Roll20 you agreed to abide by our Code of Conduct and this post violates the Intended Use section of the code. Since this is a question about GMing advice, you’d be better served posting it on a general RPG site, like reddit/r/rpg .