Welcome to Everquest! Right off the bat I should point out that you are in a very small minority on this server, i.e. the vast majority of players have extensive experience with the game. This is going to present difficulties for you in group situations (with a couple exceptions, eq is a group-based game) as players generally expect a certain level of familiarity with both game dynamics and the zones themselves. My advice is to let people you play with know exactly how new you are to everquest. It's not rocket science, but the game is very unforgiving in several ways...
I also advise you to thoroughly explore the UI and read all the tips that pop up in tip windows... these can help you with mundane things like "how do i sit down?" etc...
Finally, what did you spend your stat points on when rolling your character? If you didnt put as much as possible into Wisdom, start over and do so
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As for your specific questions -
1 - The game is definitely not quest driven. Until your late 20s you will be primarily occupied with gaining xp and sufficiently gearing your character. (Quest information can be found on many websites, although a difficulty you will continually run into is the fact that the game is being played as it was over 10 years ago, and present day sites are often no longer useful) Search the forums to find links to "retro" eq quest info, spell lists, etc.
2 - Regenerating health and mana. Sitting down makes health regenerate faster, but until you learn the meditate skill (one of those skills you saw at the druid guild trainer) at level 8 (12?) mana will regenerate at a slow rate. Once you have meditate, sitting will make mana regenerate much faster.
3 -
http://www.eqmacwiki.com/eqatlas/atlas.html <<<< maps. Keep in mind, this game only contains the continents of antonica, odus, and faydwer. The newbie zones (zones where players start out originally) have maps enabled for some reason... it was not so at the launch of the game.
4 - Gear... you poor bastard. Luckily the druid is a caster, and so his performance early in the game is not dependent on having a good weapon or armor. But, you will soon find that acquiring money, even enough for new spells, is going to be a challenge. The weapon given to you at the beginning of the game is probly gonna be as good as you can do for a while. Save ALL the loot that drops and sell it to vendors. Scrimp and save, and hopefully when you level you will be able to afford all your new spells. (you buy spells from vendors located in your guild, where you turned in your note) As far as armor goes, cloth will be the first wearable loot for you. Keep an eye out in crowded zones (the east commonlands is the central hub of the game, where people meet and trade) for higher level people giving away old gear that they cannot sell. But don't beg. No one likes that.
5 - The training points are allotted at 5 per level, and you use them to "seed" certain abilities that are then improved through use. I would save these until you are sure how you want to spend them, and they will do you no good at present anyhow.
The purpose and fun in this game is not so much in completing quests and getting gear, it's learning to expertly play the role of your class in a group dynamic, in order to basically kill as high level mobs as your group can handle as fast as humanly possible. When a group is operating in harmony and efficiency, but at the same time pushing the envelope of what they are capable of handling (and maybe even having a few things go wrong), THATS when the game is its most fun.
As a general caveat here, I would advise you to make friends with someone in game. Get yourself to the east commonlands, and /shout about how you are totally new and are looking to be taken under someone's wing and shown the ropes; preferably a pretty girl with a strong maternal instinct.
See you in Norrath, and good luck.