Stick to open-source or highly-rated clients like qBittorrent to avoid the adware often found in others.
Essential for masking your IP address from other peers and your ISP. Services like NordVPN or ExpressVPN are commonly recommended for P2P.
Since torrent files are "bencoded," these editors allow you to read the internal tracker lists and file structures.
If you are analyzing "KKFFDD.torrent" for a technical challenge, you can use specialized tools to inspect the metadata or traffic: