Like to get involved

Hi.

I recently find out about Holochain and felt I love with the concept of it.
So I’d like to contribute to the network a little. Before I dive deeper into the code which I’m still learning :slightly_smiling_face:
So I’m still searching for an answers…

Regarding earning fuel and contribute storage to the network…

Is buying a HoloPort mandatory for sharing a free storage or can I build my own host on RaspberryPi and connect multiple SSDs on it?
Can I share my free space on my laptop and desktop computer?
How many external disk drives can be plugged into the smalest version of holoport Nano?

If you don’t have time to write an anwer pleas at least paste some links so I can read about this.

Thanks