Hi
I've taken a real shine to making cupcakes, I have made quite a lot for family do's etc and I made some for my work colleagues for my last day in work as a treat! They all thought I had bought them as they said they looked professional! 
BUT I have got a few problems with them, no one else noticed apart from me!! So can you answer some questions for me please?
When I put choc chips in they sink to the bottom of the cake (is mixture too runny)??
Do you use a piping bag or plastic injector looking thing? And what size/shape nozzle do you use?
Which are the best cases to use, all the cakes stuck to the Asda ones?
How do you make sure all the cakes come out the same size, how much mix do you put in each case?
If I wanted to go into it ie as a small business from home, what do I need to take into consideration?
And finally .... can you recommend a really good cupcake book for recipes please? And some good websites to get bits and pieces ie decorations from?
Thanks
xx