Rassie,
Speaking as a fairly long time Resolve user who started with the free version around V 15, as a Nikon shooter who shoots in N-Raw, nLog and HLG, I strongly recommend biting the bullet and getting started with learning Resolve with the free version. I tried Adobe Rush the BSINC mentioned and it works, but it really does have some limits and while easy to get started, it shields you from the concepts you need to know to effectively move to the next level. I can't speak to specifics of any of the other lower end editors out there now as I haven't researched any in years. Hopefully, someone here can.
As for hardware to support video editing, if you have a late model Mac based on M1 or M2 processor of some sort with the appropriate level of memory (16GB or more) you should be good for a while...
On the Windows side, preferably an i7 based machine of 10th Generation or later with at least 16GB of memory (32GB preferable) and an nVidia GPU of RTX3060 level or better with at least 8GB of VRAM, more is better and the sky is the limit. As with still photos, fast SSD's for working storage help and you will need lot's of GB for archival storage, but that can be spinning discs.
The free version might be all you ever need, but the paid version at $300 is something you'll not outgrow...and likely only pay for once. If you're serious about shooting video and learning a video editor, don't waste your time learning something that is going to be a dead end. There are a LOT more things to learn about video, both in shooting and post processing in terms of frame rates, codecs, color spaces, gammas, LUTs, etc. It can, at times, seem an impenetrable wall of technical jargon when you get into the nitty gritty, but if I can sort it out, most people can. One nice aspect of Resolve is that it can automatically handle all the Nikon image formats and color spaces automatically if you use Resolve Color Management...you don't have to worry about LUT's, color spaces, etc...Resolve knows how to manage all that
The learning curve is, in some ways steeper, though if you really see yourself wanting to shoot more video in the future, it's time and effort well spent. There are plenty of resources available online and within this forum that can help. As far as I know, none of the free or cheap editors support N-Raw or HDR other than DaVinci Resolve...even Premier doesn't support N-Raw yet.
Last bit of advice...start shooting in H.265 or H.264, 8-bit, SDR...don't worry about N-Raw, nLog or HLG. You can play and edit these standard files on just about anything!
Cheers!