Processing Transactions on a Lighting Node

I’ve been reading up on running a full lightning node and am becoming ever-more interested in setting one up myself.

One thing that sounds very interesting, though I can’t find much information about online, is processing transactions through lightning channels. For clarity, I'm not looking to be profitable or make money on fees; I just want to do a small part in helping the global financial ecosystem.

I have the following questions here that I’m hoping the community can help out with:

1. Can any lightning node set-up process transactions, or do I need a certain level of GB for the raspberry pi, Micro SD Card, SSD Card, etc. to have a better/realistic chance of processing transactions?
2. Does my lightning node need to be funded with BTC before it can process transactions? If so, do I need a certain amount of BTC on my node to have a real chance of actually processing transactions? Also, is there some sort of mathematical relationship between these two things (ex: if I have $1,000 BTC on my node, I can process up to $10,000 in transactions, but if I have $10,000 BTC on my node, I can process up to $100,000)?
3. Does anyone have recommendations (articles, videos, etc.?) for where to learn more about processing transactions on a lightning node?