How would a two star system work?

So recently I have been learning about binary star systems, and some points that came up were:<br><br>* They are most commonly two G-type main sequence stars (like our sun)<br>* Further back, the two stars are about 10-100 AU from each other (our solar system is about 8 light minutes across) <br>* Closer stars are often where one star has engulfed the other<br>* Binary star systems can exist with more than 2 stars<br><br>I am trying to create a two star system for a fantasy book, and I want it to be realistic in that it’s supposed to be like our sun in that it’s a lone star in the middle of its own system, but for two stars. <br><br>So my question is, considering these things, how would two stars function together as one star system, where it’s not just one star engulfing the other? Would they rotate around a common center of mass? How would the planets around them rotate around both? What would be the effects on the planets? How would the stars rotate around each other? <br><br>Any help and resources would be great