Both sites have endless help pages for new sellers. Read them.

I agree step 1 is READ!!!! ALL the information you need is on the site(s) LAZY people get NOTHING!

Plz some one guide me... How do I become an amazon seller because I am student and i don't have VAT number so therefore i am bit confuse... I'll be glade if you guys help me out for both AMAZON & EBAY market places strategy then ill try to become a seller!! Thx