Depends what your goals are.
Transitioning to Linux Mint is one way, Linux Mint looks very similar to Windows, with a few small caveats like some proprietary windows-specific software will probably not work there. But it has a lot of free software, that are either as good, but are actually more secure since they are open source.
With Linux Mint you sacrifice some convenience for better security.
If you wan't more security, Use Debian, it has less properietary blobs, so it's even more secure.
If you want ultimate security, use Qubes, it's the same as Debian, but it has software compartimentalization and virtualization by default, where you can separate sensitive workspaces from casual workspaces.
https://www.linuxmint.com
https://www.debian.org
https://www.qubes-os.org
My goal is to secure my steem account as much as possible, but I'm not very familiar with technical side.
I can understand that, looking at your balance though.
However there is nothing technical about this. Linux is not really that hard to understand, I mean if you are already doing most of your work in a browser, then it's really no different from Windows from that aspect.
The only seeming difficulty might be with installing software, since Linux is different in that aspect. However everything else, is just much easier. For instance a Linux filesystem is much more organized.
I think Linux Mint is the best to start for beginners.
Also I hope you only login with your posting key, and not with your owner key do you?
I was planing to buy a new laptop just and use it only for steeming. It looks like with qubes-os it would be safe enough. I'm logged in with posting key by your advice in one of your previous post (I actually read them all, even if I vote with steemvoter). If you don't mind, I would like to ask you another think: When I registered my account last year there was no option for account recovery with additional e-mail or person. Is it possible to do it now?
Thanks for answer.
I have no idea about the recovery system here.
However Qubes is tricky, it doesn't support most hardwares out there. For example I tried installing it on my fiances laptop, but her laptop's network card wasn't recognized by it, so I could not connect to the internet from there. And my current PC is just too weak for it, so Qubes requires a small certain set of hardwares, and not all of them work on it.
I would also not buy a Laptop if I were you:
If I were you I would just buy an ARM processor based full computer. Laptops are trendy and all, but it seems to me that their security is crap:
https://en.wikipedia.org/wiki/ARM_architecture
It's not perfect but the alternatives are all probably compromized already.
Thank you very much for answer. I will look around in that direction.
The problem is that it's very hard to have security in this day and age, since they are literally coming for everything. I just wrote an article about this, how they are cracking down on private property. They literally want everyone to be a slave: