you can not install .bpl files from other Delphi Version.
you have to compile the .pas files with the actual Delphi Compiler
you have to do some tricky jobs
you have to build the runtime (jcl) first, begin with the core packages
before you do this, set all the path's to the jcl directory
before this, it is better to copy the files on a second "no space included" path on a second hard drive (to simply copy the bpl files on re-new your Delphi version)
then you have to compile all you want by hand (this can take awhile, because you have figure out, which depend units are required
it is normal that you have to do some steps again.
but the actual jedi lib does not support the Community Version of Delphi.
my favorite Delphi is Delphi 7 from the year of 2002. it is 32-bit. but for the most of use (learning delphi) it is okay and make no problems.
I have install over 1000 components in the delphi Palette for Delphi 7.
one of the components are Jedi.
Dont mess your Time, use Delphi 7. It is a good start point.
Or take a look to Lazarus + FPC.
Hope this helps