Getting better at badminton:

When people start playing badminton they want to get better. But the first thing they think of is buying a brand new badminton racket wasting lots of money.
In badminton you should focus on holding the racket the right way for all your strokes. A good back-hand grip and forehand grip.
If you are new to badminton , then you will probably want to learn the correct way too play the stokes . You can loose accuracy and power because your stroke is incorecct.
FOOTWORK!

Footwork is very big in badminton , I have done god knows how many amount of shadows , drills , training excercise and multifeeds. Footwork is very important in badminton. Rerember theres no point of having a good shot if you can't get to the shuttle quick enough or on balance or be ready for the next shot.

Don't focus on other things in bamdinton expensive rackets , cool crazy tricks etc... This is a big waste of time - and I've seen people with huge amount of talent waste it because they practice on trick shots when they could practice that time on other shots or footwork.

I think the key to badminton is practice on the basics. Having good shots and good footwork is the best place to start.