I want to start stretching my ears?

but i don't know how to start. ive had my ears pierced for about 11 years, so what size should i start at? i'm not planning on stretching too big, only to 10g, maybe 8g, maybe 6g... haha it depends how addicted i get, i suppose. where should i buy my tapers at, because i heard that spencers and hot topic's tapers are cheap quality and overpriced. i heard that your ears will shrink back to normal as long as you don't go past 10mm, or that's what it says on wikipedia anyways. is this true? any info that might help me would be nice.