I'll like to get a simple mic to record my own covers.. I usually sing, but sometimes I play the guitar as well.. But I have no idea what to get >.< Would prefer something that is below $100... Is it possible? Pls help! Thanks!
As kester mentioned, some mics have a USB version. You can plug them in directly to your computer for use with audio recording software.
However, the traditional non-USB versions (using "XLR" connectors) are more versatile, in the sense that you can plug them into any standard interface or mixer anywhere, and you can use more of them easily if you ever expand your home setup. You will need to get an audio interface to connect such mics to your computer, which is additional cost.
Yup, for your budget, strongly recommend a Shure SM58, well within your budget and the quality is definitely more than enough for your simple home recording.
If you don't mind stretching your budget I'll recommend the Blue Yeti USB condenser mic. $229 from Apple store, mine arrived in 2 days. Get a condenser at least.