Oh boy…that’s quite a bit of info you are asking for…lol.
To start this off…a Gnosis is a good all-around BC. I used that for everything until I got into a Praxis, then Rattlesnake. It’s all really up to your particular tastes in ships and weapon system types. I would suggest spending lots of time trying out different ships and weapons.
As for PvE activities…wow, where to start. What do you like so far? Me, I like combat, so I do L4 security missions, Emerging conduits and other anomalies. I mine once a month or so to build my own ammo, and stockpile, then do Empire navy missions to make faction ammo. (Some of which sells for tons of ISK)
I also spent months with the goal of simply raising all the empire standings. I’m currently above 5.0 with all the empires. That actually makes tons of ISK once you can do the Epic Arcs.
There’s so much to do…it’s tough to suggest stuff. Exploration/hacking, mining, mission running of all sorts, abyssal sites…the list goes on. Niche stuff like making a scanning ship just to hunt down abandoned drones, COSMOS (you’re probably not ready for that yet), static complexes…yeah, so many different things.
Only tips I can really give you…is try everything.