Hello Direlda, and welcome on board

I am certain that everyone has a different method for dealing with the odd sprue or bit of flash on their minis, as an IT technician I have the advantage of getting my mitts on lots of different tools, so for the softer white metal commonly used for figures, I have found a good but cheap electricians wire cutters does the job nicely for me.
Obviously you will want a bit of sand paper and maybe a hobby knife to tidy up the cut area and don't laugh but I prefer to use the cheap fingernail files found in a dollar/pound/Euro store as you can cut them easily to make them smaller, most have four grades of abrasives on them( some even have more) and you can bin them when they no longer do the job.