Earlier quoted context omitted.
That is correct, there is a maximum number of transactions that can occur on the main Bitcoin chain (it was ~7/second at the beginning, and I think it still is) so there is effectively an auction to get on the chain. As ignaloidas explained in another comment though, this doesn't include the Lightning Network which is where most everyday transactions would occur.
Alright, so there's always a way to get my transaction through, nice. Would you have any resource that is worth checking out to learn more about blockchain? I don't care about market analysis, economy. I just want to understand the underlying technology to know what's happening there. Book would be fine too.
This is probably the best in depth technical overview of how Bitcoin works.