You already got a lot of good advice. Here's my two cents:
1.) Get Lorebooks and Skyshards addon
2.) Do not try to go fast - the game IS leveling, this is not WoW.
3.) Do not let the complexity overwhelm you. Start with the bits that are interesting or useful to you and work your way through the rest later. For example, you will probably want to be able to learn crafting relating to your own weapon, but provisioning is nowhere near as urgent or important.
4.) Enjoy, this is an ESO game, treat it as such and not "just another mmo".
5.) Gold comes easy in this game, so do not panic about prices and be a decent player, do not rip off others. Getting gold is easy, getting liked is much harder
Once again, welcome and have fun
You already got a lot of good advice. Here's my two cents:
1.) Get Lorebooks and Skyshards addon
I feel that point one kills a lot of the discovery fun, but of course it's purely subjective. Good points anyways
Possibly. I didnt get them until lvl 50, actually, as I was reluctant myself. However - the way the addon works is that it is fully integrated into the game and shows items like they are on the map. It seemed very natural and didn't feel like an addon. Really liking it now
But I see your point, some people might want to do them without addons