I agree with PaperPrincess...make a list of the features your need/want in a machine. Let your fingers do some walking via Mr. Google to see what machines fit those parameters. Then go test drive the machines you think you want. If possible, take into consideration other types of sewing you may be interested in. I do piecing; home dec sewing; mending (sigh) and perhaps some garment sewing along the way. Each have different needs/desires.
If you just want a basic machine to get you started until you know what you really want, invest little and get a basic machine from Walmart or the like. Don't spend lots but make sure it's at least sturdy and not too finicky.
If you're of a mind - a vintage machine - Singer vintage in particular - are great starter machines. They are practically indestructible and sew beautifully. And very inexpensive from Craigslist or a thrift shop.
Get your feet wet and then upgrade when you have a better feel for what features you may want/need.