Hi, first question might be - 'what do you want to achieve'? Second might be 'what do you believe using a VPN can do for you?' Third might be 'From whom are you trying to hide your internet activity'?
Some thoughts:
a. Using a VPN can mean you appear to be located in a different country. This might be useful, depending on what you're aiming to do.
b. Using a VPN might mean your internet connection is slower- depends on how fast it is now, and which VPN service you use.
c. Not all VPN's support using torrents.
d. Using a VPN might help you escape the restrictions imposed in a country. E.g. some years back I was in China, and had to use one to access certain sites and use email reliably. However, they have tightened up since then and blocked protocols fundamental to VPN services.
e. Occasionally (a) might cause a security problem when logging in to certain sites.
f. Decide if you need a VPN for all internet usage, or just for your browser.
You might also consider using a secure browser that removes tracks.
E.g. Brave:
Secure, Fast & Private Web Browser with Adblocker | Brave Browser
Chrome has lots of free VPN extensions.
Does Google Chrome have its own VPN? | TechRadar