Help a starter Marauder

Well, my first char was a witch and i got bored rlly fast because of how weak it was, then i decided to go for the bulky guy, now i reached 53 and i find it very difficult to play Act 3 Cruel ,even tried docks, but still dying fast, i got only 350dps 2,1k hp, 100 hpregen,and so/so reistances (chaos worst).So i find difficulty in finding gear, im to always find armor with at least 3 red sockets and +hp, the boots dont matter what gems, just some move speed and res/life , ring/amulet resistance(life optional) and weapon must have at least 3 red sockets and tons of phys dmg(+attk speed if there is).Having so many requirements on this build, i die very fast,my current gear ahs all i need except armor, all the armor is underleveled and i get the needed requirements but not the armor and i keep dying.
My build: http://www.pathofexile.com/passive-skill-tree/AAAAAgEAAecFLRDwEuEUIBRxGJEaVScvLv826ECgQo5QR1BQVw1YY1nzXz9gS2EhZKNqHmvZcqlyu3Tteu982YTvkFWRzp65oW2iD6LqpKynMKeEqBisqq-iuc277byfwBrBBMbY0iHewd-_45_kre8O8i_3Mve-_9M=

Any tips whre i can farm some Act 3 cruel gear that i need, or something else?

Hi best tip is group up and hang back until you level up more and you're ready for maps. Try the chaos/chromatic/gcp formulas to start building your currency. Look at what skills you want to use and read guides to check passives and gear until you are confident. I like groundslam/heavy strike and that is what I currently use. Pm me if you want more info on this specîfic build.

Hey man,

I'm doing Double Strike and Spectral Throw and technically Leap Slam too (contemplating speccing out of ST for my AOE skill and implementing melee splash with Leap Slam)

Anyway, it's amazing DPS early and extremely fun to play. If this sounds interesting, here is my forum build thread http://www.pathofexile.com/forum/view-thread/814049.

I'm level 80 and can do 78 Palace no prob (cept the boss- that takes a little more effort)

I recommend lots and lots of life with Mara. I'm 5 levels away from getting a 18 life node and in the route, I take 2, %8 life nodes to equal: 16+18= 30% to the maximum life which will equate to about 5K health when I reach level 85. I'll be able to do that Palace boss at that point; also by level 85, my gems will be nearing level 20 so ill have much more DPS to throw at it.