These two tutorials on parts making apply to current versions of Fritzing. Note that making parts successfully is a complex process.
I lately learned there aren’t links to the videos in Old_Grey’s tutorial so you need to do a google search for the title and then they come up on YouTube.
that said it may be easier to upload the svg files (upload is 7th icon from the left in the reply menu) and specify what connections you want and get one of us to make you a part.