Can you get to a Bobbi Brown counter? Really friendly and non-pushy and the products are great for a natural look.
I'd start off with a tinted moisturiser, cream blusher, concealer, brow pencil, mascara & tinted lip balm or sheer lipstick and a setting powder. Assuming you don't want to spend all your money on high end products, my recommendations would be:
No. 7 Triple Protection Tinted Moisturiser
Bourjois cream blusher (they were only launched yesterday & I think colours 1, 2 & 3 would suit, but have a look at number 2 particularly)
Maybelline Eye Studio Master Shape eyebrow pencil
Burt's Bees Tinted Lip Balm (REALLY recommend these and there is a brilliant offer in their online sale ATM, I think the 'Pink Mix' would be good for you)
I use Maybelline Full 'N' Soft mascara in dark brown for natural lashes, which you can buy on Amazon.
I use NARS setting powder, but hear very good things about the No. 7 powders.
If you're willing to spend a little more, I would really try to get to Bobbi Brown for tinted moisturiser and to MAC for their cream blushes.
I think BB and CC creams are bollocks, I'm sure others will disagree!
If you want to add in a bit more makeup, I'd also recommend Clinique's Cream Shaper eyeliners.
See how you go before buying a primer, you may not need one. Everyone loves Smashbox primers and they do a sample size - not cheap though.