I am new to electronics and have been toying around with the arduino for about a month now. I have played with simple things like servos and motors but I have decided I wanted to make something of actual use to me. My problem is I have a relatively weak understanding of how to build proper circuits.
My want is to use the arduino to control a 12VDC solenoid valve and a 12VDC linear actuator. I was thinking of using transistors to control each of them, but am not sure if it is the best way or even feasible to control them in this manner. I also am unsure of what to use as a power supply, I was thinking a wall plug via something like a computer power supply. Thanks for any help you can give!