If you do a search over on the 2a page you will get a ton of good tips. I just finished a rear end rebuild. The axles should come out pretty easy unless the bearing or race are rusted. I used the "brake drum slap hammer technique"
Basically:
1. Using a heavy duty hub puller loosen the brake drum from the axle
2. Put drum GENTLY back on (without engaging taper)
3. Put axle nut on and spin a couple turns to engage threads
4. GENTLY backslap drum against axle nut and the axle should slowly back out.
This should not require excessive force so as not to damage the drum. Mine popped right out and I reused my drums without a problem