No, you have to have a stylus. The stylus has circuitry inside that breaks the electrical field of the tablet. Assuming it is a Wacom of course.

You can get replacement styluses from Wacom, but you would have to contact them.

Yes, you click with the mouse when you press the stylus down. There are a lot of old school artists that successfully transitioned to digital media so maybe you could do some searching through artist blogs and find someone that walks through the process they used to retrain themselves.