learn British slang

i really like the British slang ,it is very cool.

im very interested in learning the British slang
i like the way they use the letter “A” and “O” differently
but its quite hard to catch up
can u help me if u know it???

I would like to learn British slang for my English. Please help me in doing so.

british slang always sounds really cool when i hear it in songs and movies, I hope I pick up some of the words while i’m in england