Believe me its hard at first but when you play long enough ull start to understand it more and make a decent build..
Have you considered this:
- placing +7500 hp on every gear including pet
- placing +5000 ed on every gear including pet.
- luck affix and fauns gift set
- vamparic touch set affix.
These are some tips for a basic build to reach eternal league. You can experiment on other affixes also to improve it.