I'm using odoo.sh and I'm going to creat thousands of products (mainly laptops and printers) that will be sold on our ecommerce website on odoo.

The easiest way for me is to import the caracteristcs as well as the pictures from icecat (A free datapool collecor). it gives the prossibility to import data and features under xml and/or csv formats.

Could you please explain to me what are the steps i have  to follow to achieve importing the catalogs by using icecat?

I'm new with odoo. So please do not hesistate to give me the maximum of details you can.