1. clear your bags- should max out on bag slots so you have less time needed to go to a ccentral hub to deposit items
2. recommend to stock up on pots, flask, food and other consumables- specifically: I have 5 stacks of pots, 2 stacks of flasks and 5 stacks of mana/health food per toon
3. Have upto 25 daily quests ready to hand in! The first level in MOP Jade forest is going to be filled with people trying to collect mats that you may need. Getting out of the starting zone as fast as possible will be important to get ahead of the curve. I recommend doing the hyjal and Tol barad quest chains. If the quest chains are phased try handing them in reverse order
4. NEED GOLD - every raider should have at a minimum 15,000 gold saved prior to MOP launch. This will be required, for new training, flying, black market AH and other goodies that will be released.
5. If you are in a large guild try to pre-arrange a group of 5 players or so to do scenarios, dungeons. The fastest way in my opinion to level still will be to do quest/dungeon however doing them in guild groups will give you as much as 40% extra experience!!!
6. Now is the time to look at if you are in the right guild! Ideal guild considerations would be one that has been stable, is large and more importantly ACTIVE, and has players that you can get along with.
7. Remember there is no flying in MOP until one hits level 90 and so make sure enjoy the content of the game!!! Also if you are planning on rolling a monk you may want to invest in experience boosting armour as well as items that increase mount speed.
8. Patch 5.0 will be released almost one month earlier and will have some of the major changes that we will see in the expansion including the talent tree re-vamp. Although this will take something to get used to, it will provide extra customization for your specific toon. It iss well worth your while to read up on how to min/max your toon by reading a number of reputable sites. Other changes will include pets/mounts now will be account wide, as well as an extra character slot will be added per realm per account.
9. Hop on the BETA if you have not already done so. The world of MOP will bring new fights, interesting challenges and new raid encounters.... Only way to get a sneak peek is to hop on the beta!
10. LASTLY and most IMPORTANTLY HAVE FUN!!!!!!! Remeber you pay the $15 dollars a month not to get stressed out..enjoy ..sit back & relax....and do NOT SLEEP...haha