You'll be fine with either. Just pick a camera you can afford and focus on quality glass (lenses). I personally prefer the Canon system so my recommendation would either be a T7i (DSLR) or, if you can afford the upgrade, the EOS R (Mirrorless and my current primary).
Biggest con these days on mirrorless is they tend to run through a battery charge about twice as fast as a DSLR equivalent.
For materials.. as much as I've not been fond of youtube in the past for whatever reason I find it extremely valuable today. Peter McKinnon is pretty great or if you want to start with landscapes maybe check out Thomas Heaton.
Biggest con these days on mirrorless is they tend to run through a battery charge about twice as fast as a DSLR equivalent.
For materials.. as much as I've not been fond of youtube in the past for whatever reason I find it extremely valuable today. Peter McKinnon is pretty great or if you want to start with landscapes maybe check out Thomas Heaton.