Epirus is one of my fav factions to play. It was the first faction I ever played in EB back in 0.8x cant remember which one exactly.
Usually when I start a campaign with them is to destroy everything in Taras and give it to the Romani, try and trade it for ceasefire/trade rights/minai. This is easier to do seeing as there is no FM there anymore. I also disband my navy and the Illyrian cavalry in my two mainland cities. Keep the elephants for now, they are very useful for taking down wooden walls early on.
I also take Pella in the first turn using the elephants. After that you need to consolidate the rest of mainland Hellas. To do this effectively you need to destroy the Makedonians field army, if you are good at field battles then this shouldnt be too much of a challenge, though if you are worried you can either try and trap them in Demetrias (sp?) or if you're lucky get them to siege Pella with your army inside. Once you have taken Demetrias and destroyed the Makendonian army you can probably disband your elephants as they are a big drain on your economy.
Some campaigns I get lucky and I see the Maks and Koinon duke it out for a few turns and reduce each others armies a bit before I have to tackle them.
As for armies MAA said it well, basically a successor army but with a few more heavy inf than the rest. Usually my armies consist of a solid core of phalanxes, usually Phalangitai Deutoroi (sp?) as their AoR is widespread, a few Pezhetaroi and one or two Chaonion Agema. Then I usually base my flanks on Thorakitai with one Theurophoroi (sp?) on each flank for flavour and to envelop the enemy. As for cavalry I quite like Thrakioi Podromoi (sp?) and also the Lonchorphoroi Hippeis (sp?) as they are fairly cheap and a very sexy unit. For missiles I just use a mix of slingers/archers, whatever the best you can get your hands on, recruit the Cretan mercs as they are the best archers around for you.
As for regionals good places to get decent ones close to you are the two regions above Pella and Byzantium, Serdike and argh I cant remember the other one, starts with a T! Anyways either of those are good places to pump out regionals for your armies.
Other than that just remember to destroy the foreign Govts when you take a town like MAA said and build economy buildings to make more money, mines are a must, always build the 1st tier mines everywhere you can!
Good luck with your Epirus campaign they are a great faction to play, lead Pyrrhus to the victory he deserved!
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