You may as well just Google to find the answer. There’s umpteen guides to removing a movement and hands on the forums and on YouTube - it’s relatively straightforward but better to follow a pictorial or video guide.
Of course, when I say straightforward, that’s supposing you have the tools and confidence to:
- Remove the caseback
- Remove the crown/stem
- Remove the movement tabs and drop the movement out
- Remove the hands
- Flatten the minute hand (this should be the easy bit)
- Put it all back together again
Removing and replacing the hands was a nightmare the first couple of times I tried it, and I broke two second hand pinions on 2813 movements because they’re about the thickness of a hair.
But, playing with watches is fun... enjoy!