Hi,
Since Joomla 2.5, there is a native translation in Joomla.
So you don't need JoomFish/Falang to translate your content.
For Joomla content, you'll find information on how to do online:
www.slideshare.net/erictiggeler/creating...-guide-eric-tiggeler
For HikaShop, you would have to create one category tree for each language and then one product for each product for each language in the corresponding category. Then, create several menu items, one per language, and assign the corresponding category and the language switch will be done at the menu item level.
The issue with that method is that it's not practical.
JoomFish/Falang make it a lot easier to manage the translations of the content, specially with HikaShop content as we have an integrated translation interface if you turn it on in the Languages tab of the HikaShop configuration.
So I would recommend to use Falang.