mmh, ok. druids also wear cloth and leather and with the spellpower changes most of the items healer/dd caster wear are equal.
you can look at
shamans healer/dd
druids healer/dd
to search for gear.
after that you visit wowhead and look for item improvements.
after that you present a set of gear and additional items to the community and ask for improvements/suggestions.
as i never used to play a 39 shaman i can't give you any advice on talents, but there will be others. gear is no prob, as i used read a lot and know some decent druids and shamans. nothing that can't be found with a forum search i think.
besides this, it is not possible to give any good advices atm, cause nobody knows what the patch will bring. if they take away BC enchants, items below lvl 35 will come into account. the leg enchants won't change that much...imo necromancer will remain best in slot for the most casters.