Are you Raspberry Pi fan or Arduino fan? Maybe both.
If you're interested in DIY electronics, here is a kit you can't miss.- Starter Kit for Raspberry Pi and Arduino.
It's a pretty good choice to bring you into electronics and learn how to use Raspberry Pi and Arduino at the same time.
There are and 24 lessons for Raspberry Pi and 30 lessons for Arduino.
Even you're freshman, you can finish the experiments attached in the guide book by following the specific steps.
The price is pretty much reasonable. It feels like that you spend 1 cent buying 2 cents value product.
Here is the package list of the Starter Kit for Raspberry Pi and Arduino.