Going from Brunette to Blonde - at home help!!!!

this is my first post so,

Hi everyone,

Sorry for the long post


i have brown hair naturally i dye it every fews months because my roots start to come through as my colour now is different to my natural colour.

im bored with being brown i want like a mousy blonde hair with highlights through it like Jennifer Anistons.

as my friend has done this at a salon and it cost her £100 which cn't afford i thought about using a pre-lightner and then one of those packs thats a colour and highlightening pack. iv used a pre-lightner before and it made my roots go orange and the rest of my hair bleach blonde i just dyed it brown again as i was worried about wat colour it would come out.

but as i have found this great website i wondered if anyone had tried to go from brown to blonde with a pre-lightner and a colour b4 and what it came out like?

Thanks