If you want to copy movies you will need a "Video Stabilizer" which costs about $25. The video output from the VHS player plugs into the stabilizer and the output of the stabilizer then plugs into your recording device. You do not need a time base corrector which is quite costly.
If you want to capture direct to a computer you will need a video capture device. The simplest to use is one that plugs into a USB port. These capture both video and audio.