You shouldn't have to download any patches because the patches are only for people who have already had FeralHeart and maybe have an older version of it and need an update. Since you just downloaded it today you should be fine.
EDIT: Sorry I wrote torrents instead of patches earlier @_@
The torrent should not do anything bad to your computer. The downloads for the game on this site are safe. Also btw avoid downloading FH+ just as some advice because it is VERY buggy and glitchy. Stick to the regular FeralHeart it will give you less problems.
![Smiley :)](https://feral-heart.com/smf/Smileys/default/smiley.gif)
Hope that answers it all for you