ECommerce Help

Hi everyone, I am new to the forums, I just have a few questions for you experts out there,

I have a website right now running on CS-CART, it dosn’t feel too popular on this forum but maybe someone would know it… but thats not the point.

Right now I am having trouble adding data one by one copying off manufactures websites (Product Code, Product Name, Description, Price) etc it is way too slow, is there any other way to do this?

I know in CS-Cart i can IMPORT products, but I don’t know how to generate the CSV files to do that,

In the automotive industry there are too many categories and products for myself to be added, is there anything i can do to make things easier?

how do you guys manage your websites when you add products? how much do you charge to maintain the site and update for the company?

Thank you very much!!