Transfer data from 2011 Mac mini to new Mac mini

Click on the link to read how to...

Move your content to a new Mac - Transfer to a new Mac with Migration Assistant - Apple Support

Migration Assistant copies all of your files to your new Mac so that you don't have to copy your files manually. If your files are currently on a Windows PC, follow the PC migration steps instead. If your new Mac is using OS X Mountain Lion v10.8 or earlier, follow the Mountain Lion migration steps instead.

Feb. 2021 tips by rkaufmann87 about Setup Assistant vs. Migration Assistant on startup.

I just got a new 21.5 I Mac w/ 4K Retina … - Apple Community

Aug,. 2023 tips by rkaufmann87 about Setup Assistant vs. Migration Assistant on startup.

transferring files from a 2008 iMac to a … - Apple Community

Note that you will find many apps will no longer work on a new model Mac.

Imacquest wrote:

how hard is it to transfer all data and photos from 2011 mini to new mini.

It should go smoothly, if you follow the support article supplied by Limnos and the tips supplied by rkaufmann87.

Official Apple Support Community