Hi Enjol I remember you from the CT thread. I love high-end stuff too but nothing beats a high street bargain IMO!
My favourite high street brands are Bourjois, Rimmel and Maybelline.
I really rate the Rimmel Scandaleyes pencils (Bluffing, Tresspassing Taupe, Rose Gold, Bootlef Brown, Bad Bronze are all fab)and khol liners. Bourjois khol liners are also really good.
The Bourjois gel blushers and cream to powder blushes are also great quality and really easy to use.
The Maybelline matte lipsticks (new ones in dark grey packaging) are excellent and could hold their own against many high end brands, imo. I also really like their chunky lip pencils which I think are a good dupe for the Bobbi Brown Art-Sticks. They are quite a bit smaller though.
For super-duper cheap and experimenting your DD might like Makeup Revolution (MUR) and MUA (both in Superdrug). MUR in particular are known for their dupes of high-end palettes, like Lorac and Urban Decay - again for a fraction of the price.
There are also some decent high street foundations now too. The Bourjois and L'Oreal bases are supposed to be particuarly good. I know the Bourjois CC Cream and Healthy Mix foundation have a lot of fans! The one downside is that, even though the formulas are good, the shade ranges are very limited, which sucks for people who have darker skin.
That's just for starters...sure I'll think of more for you.
As for beauty bloggers, I like British Beauty Blogger, Caroline Hirons (she's more skincare though), AModelRecommends, and Tales of a Pale Face. You may also like Sali Hughes beauty column in the Guardian. She also has her own website.
There are some really good beauty vloggers around who are proper make up artists. My current favourites are Sharon Farrell, Harry Makes it Up, LetzMakeUp and the brilliant Lisa Eldridge.
Anything else I can help with? I could bore on about this for ages!