The preposition "con" usually translates to "with" in English. Here are its three main uses: ​Company (Compañía): Being with someone. ​Vivo con mis padres. (I live with my parents.) ​Instrument/Tool (Instrumento): Using something to do a task. ​Escribo con un bolígrafo. (I write with a pen.) ​Manner (Modo): How something is done. ​Lo hizo con mucho cuidado. (He did it with a lot of care.) ​IMPORTANT! Special Forms: When "con" is followed by "mí" (me) or "ti" (you), it changes to: ​Con + mí = Conmigo ​Con + ti = Contigo