Just a few things for you;
1. for quest there are add ons that can help a bit but When I was new.... I used to like;
Thottbot - World of Warcraft you enter part or all of the quest name and it'll tell you everything about it
2. go to a BG and check out hunters or Rogues that have 1300++ Health and in worldofwarcraft.com just enter their name in the search block and see their gear. You can usually 'click' on each piece of gear and it should tell you where it came from. try mine >> Navyretired << note there are two items that are Honor and Justice points rewards so until you start making over 2k honor you'll have to wear blues which are usually 2nd to best in slot (BiS).
3. along with fishing cooking and first aid that you get to level and archaeology if you bought the Game. Now you get to do skinning for leatherworking mats to make +16 armor kits you have 3 slots that use armor kits and medium armor is needed for them. note 4 light leather makes 1 medium leather. there is a cooking daily and fishing daily
During all your instance your get to GREED on everything you can't wear to make you better and you put them in the bank. Enchanting will level upto 25 or 30 just DEing those items. Hit "i" and do your random daily instance for a little gold and your belt, keep doing it until you get the BEST BELT for you and until you have ten gold or are completely geared.
Mining creates mats for JC if you see anything there you need, not to much really. i like the little bot that heals you but that really will come later. also mining creates course and rough stone that you will use for Black Smith to make course and rough stone. you can google anything I discuss here. with 1 or 2 Battle Grounds (BGs) you can get the (BiS) neck piece and trinket out in Ashenvale. Easiest way to get to ashenvale; in Storm wind you go out to the boat docks take the LEFT boat to Darnassus and fly to as far as you can South East then its a long sometimes dangerous run/ride from there. PM me if you need help.
So much to say, i think there is some other help guides on this website too. Make sure you do the Darkshire quest line that leads you all the way to big ugly elite that storms town for the ring reward.
anyhow you can always ask if you have more questions, there is so much to learn.
Since you have to level most of the Professions, you are starting at the perfect time... if you have time to waist right now.... on the 4th or 5th of of next month starts Dark Moon Faire, you can get your first BiS piece of gear by doing all the dailies there and you can level each profession to 75 min to get the extra tokens to pay for the item. lots of research there too the quest are little fun and great rewards.
By each Flight master Storm Winds' is at the bottom of the stairs is a guy who sells "tabards" wear the tabard until you get revered for that faction buy the 16 slot bag for a 1.5 gold or something then sell the tabard go to Iron Forge or Darnassus or... drawing a blank on the 4th and get their Tabard until revered. each one sells a 16 slot bag for cheap. You'll need bag space.
wow got to go good luck PM me for help.