i decided to go frenzy barb what are the best weapons...and looking for some good guides....should i got axe or sword give me some tips

Dual grief pb
Guilaume 10-15@/15ias
HL
LOH
Eni or forti
Gores
Strings or arach
10fcr/ml/ll/adds
Raven

Pretty simplus apperatus.

i think frenzy is for procs. weapons like last wish, lawbringer, destruction, stormlash, shafers, voice of reason, crescent moon are more fun than the weapons that are just for dps. making a throw/frenzy hybrid might be pretty good too, if you can get your hand on some eth lacerators or warshrikes.

Dual grief pb enigma with reapers toll merc is generally seen as the standard.

I prefer lawbringer pb grief pb treachery armor with fort to swap if you so choose and pride might merc.

Yes, eth reapers might merc is important. And enigma to let merc catch up xD
In d2lod where we could wsm bug we could use eth death CS + Grief PB, but many monsters got 1 tapped by grief and not by death, so dual grief was fastest on lower player ammount, meanwhile death shined some more on p8, espesially vs bosses.
But you don't have to think about that in d2r, because wsm bug is out of the picture anyway.