If you are going to convert your CDs get Foobar2000, it is free.
https://www.foobar2000.org/downloadHere is a guide on converting from FLAC (same process for other original file formats) to MP3 (includes steps for installing MP3 decoder). For encoding bit rate I would suggest 192KHz VBR (variable bit rate) with a 44.1K sample rate, good compromise between file size and sound quality.
You can also edit the file Tag info (Artist, Album, Track, Artwork, etc) with Foobar2000.
(time for a small vent from a 60's something year old.....AM was simple, FM was simple, Vinyl was simple, 8 track was simple, cassette was simple, CD's were simple. What the heck happened????)
Plenty of info one click away. I have a 256GB iPhone, it's really nice carrying around a large portion of my music library in lossless FLAC format.