The Shadow wrote:
Well, good news is that Dwarves have an excellent book and that the Battleline is probably the best army deal GW have ever done (that I've seen since I started)!

In terms of what else you'll need to buy, I'd get another box of Warriors, bumping that Warrior squad to a nice 36 strong, and another two boxes of Hammerers (I'd certainly assemble them as hammerers), giving you a very strong combat block. Next, a BSB and a Dwarf Lord (not strictly necessary but pretty damn awesome) and two Gyrocopters as chaff should set you up with a very strong, pretty much full sized army. Add whatever you like from there.

In terms of actual Fantasy gameplay, and how it differs from 40k, you need to watch out for one thing above all: movement. It's a lot more important than in 40k thanks to the facings and manoeuvers mechanics. Use your Gyrocopters as chaff, to draw the opponent out of line and prevent him from getting round your flanks, whilst all the while making sure you don't get drawn into similar traps your opponent may have set up. Keep an eye on potential counter charges and the like. Maybe charging that vulnerable unit of elves is tempting, but will that put you in range of a cavalry flank charge next turn? Deployment is also a key, related factor. Unlike in 40k, if you plonk something on the wrong side of the board, chances are it's not going to get where it needs to be. If you've got a specific unit that can deal with a certain threat in the enemy army, make sure you deploy as close across from it as possible. Deployment is tactical too.

Exactly what i needed! You rock sir!

You'll also have to be pretty focused on Magic Defence. Magic is a very strong part of the game and, as you're completely deprived of it as Dwarves, you need to do your best to deprive the enemy of as much as his. Enemy magic will support your opponent's units and whittle yours down, to the point where you won't be able to compete. You have to stop that happening. You won't be able to stop every spell, so make a note of what spells your opponent has, think what he's really trying to cast, what spell on what unit would be most useful for him. Is those five dice he's chucked at his first spell a serious attempt to get the spell off, or is it a cunning ploy to rid you of your dispel dice so he can cast a more subtle, yet more effective spell.

As for Dwarves in general, much with any army really, you need to gauge your strengths and weaknesses. Dwarves are strong and forgiving in the sense that, thanks to high armour, toughness, leadership and the shieldwall rule, they can withstand a lot of enemy punishment, but don't get carried away. Dwarves are slow in both senses of the word, they'll rarely hit first and your opponent will be more likely to get charges off than you, as well as disrupt your movement better. Make sure you're not getting ganged up on, and none of your units are become isolated with nothing important to fight. Don't be afraid to shoot a seemingly meaningless unit if it frees you up some space. Finally, make sure you use your powerful war machines and shooting to soften up enemy units. Prioritise. Is there anything that needs whittling down, or is there anything that is less resilient against shooting than combat attacks?

Hope this helps, let me know if you have any more questions!