I am new to electronics and am currently in the process of learning the basics, i have made simple led circuits before and have a little project in mind to work towards.It would be a great help if people could explain how i would go about starting. First thing i want to do is have rechargable batteries constantly charging a device through usb but the batteries can also be recharged through a plug in the wall. What sort of components am i looking at, How do i regulate voltage and amps through the circuit and for the desired device. So if anyone could help that would be great cheers.