mp3 question

OK I'm technically challenged. Got an MP3 player and was so excited, I actually listened to the entire thing. Now, I'd like to know what are my options. I like the songs on here and would love to down load it into something compatible that I can also record more songs.
Also have a couple more questions. I have been told that there is a site called limewire that I can download for free. I like a lot of old hits.
And someone has mentioned there is some sort of adaptor that I can purchase very cheaply that will enable me to play my mp3 from my car stereo.
Thanks in advance for the help.

 

Others have had better luck with Limewire but my experience ended with viruses and spyware. I'm a bit torrent guy myself.

 

I switched to frostwire.

 

People still use Limewire?

Torrents are the only way to go.

 

Whole albums and movies? Torrents
Single songs? Limewire

 

Exactly. I use Limewire Pro and have never really had issues outside of a messed up or mislabeled song here or there, but those are rare. I'd say about half of the 3500 songs I have on my iTunes comes from Limewire.