Hello everyone! First of all let me point out that I have 0 knowledge in any of this, so where could I read some basic "tutorials". Let's presume I am not an utter moron just for a moment, and I want to start a project to controll the curtains and door lock, via PC. I got everything figured BUT the PC part, first thing I need is to figure out how to make a three position switch(which acts as a polarity inverter) WHICH is...well..electrical, like no finger pushing electrical. This thing will be used for a couple of things, not only closing curtains. The second part, is how to controll this all via PC. I would really appreciate if anyone could point me to what I should learn(and where could I learn it)! If it helps I will describe the whole desgin, I just thought not to waste anyone's time.