WATCH
The Tudors (AMAZING COSTUMES!) for period costume lovers
The Sewing Bee (Excellent technical knowledge)
Project Runway (Loads of episodes on amazon)
Go and see Cruella!
AMAZING COSTUMES
100 years of fashion
Insects in fashion
READ
9 Heads by Nancy Riegelman ISBN 0-9702463-3-1 (Excellent Resource for fashion drawing)
Fabric Manipulation Ruth Singer ISBN13: 978-1-4463-0246-0 (full of great ideas for techniques)
Fashion design by Sue Jenkin Jones ISBN 1-85669-436-4 (all about the industry)
Creating Sketchbooks for embroiderers and textiles artist. By Kay Greenlees ISBN 978-0-7134-8957-6
DO
Go to a gallery and see an exhibition
Buy a commercial pattern and try making yourself something to wear
Visit a fabric/haberdashery shop and buy yourself lots of lovely bits.