If you die use your given key to open your grave. 
Craft your grave key with a ender pearl to teleport to your grave.
Place items in the world with Draconic Evolution (default ` key).
Horse Power's Grindstone is a great early game ore processing option!
Grindstones can be powered by hooking any rideable entity to it using a lead.
The Sacrificial Dagger yields 25 LP for each damage dealt.
Are you a messy miner? Check out the Useful Nullifiers mod for easy cleanup! 
Need to nap after finding those Thaumcraft crystals but are on a server? You just need to lay down and get up to progress!
Open LagGoggles profiler by pressing -(subtract) to profile your base in single player or a server. Now you can see what could be lagging your instance or server!
Bit by a Vampire!? You better drink some milk, FAST!
Keep your distance from named Vampires!
Try your hand at enchanting for a chance to add Veining to your pickaxe!