Because it seems to be so many types of solder out there, choosing which solder to purchase can be confusing.
When I started out in electronics I had no clue, so I just used whatever solder I could find. But did you know that solder is not only used for soldering electronics?
Actually, solder is also used for plumbing.
And the solder used for plumbing should definitely not be used for electronics as it contains acid!