Here is how I would do it:
First use a live cd to mount your /home/JoeJoseph partition and remove all
(hidden) configuration files (you could even remove all directories and files
starting with a . (rm -rf .*)). These files tend to mess up the configuration
of the new to install system.
Then you just reinstall Trisquel. When at the partitioning part, take caution
not to format your home partition sda8, just create the mount point /home/
for it. The other partitions you can format and create the same mount points
for as before. Do not repartition your HD!
Then continue the installation. All the normal documents and music and
pictures and whatever you keep on your home partition will be available as
before.