how to learn circuts?

[Clockwork_princess]

So I want to get into circuitry, In school I did take a course called principles of engineering and in it we did a course on circuits so I know the very basics from what I remember. like how to find the resistance/ohm and stuff. parallel and series circuits. ill need a refresher tho.

 

but my goal is make random things. like I saw a post on here of a guy who made a button that when pressed it input alt+f4 to close whatever you have up. I want to make stuff like that, or just any random cool stuff.

 

what I need to know is a place to lean this, and then a way to practice it. so link me to a place to buy stuff ill need, im guessing a bread bored? or maybe not? im really not sure what ill all need.

 

will i need to lean other stuff too? to lets say make a thing that outputs a keyboard input? ill need a keyboard switch so will i have to lean about keyboards and such to know what switches or chip or whatever its called ill need? or it that all basic stuff i will lean when leaning all about how to make generic things?

 

 

p.s i have a solder iron and I plan on getting a 3d printer so ill be able to use that to make houses and stuff, if i ever get off the ground with circuits