Sorry for this offtop
Its usually fine in beginners and help for some reason, just dont make it habit when posting on the rest of the board.
but I'm a newbie too
Welcome.
and before I start interacting with bitcoin I'd like to know how to prepare my devices for this kind of stuff generally (min. charasteristics of pc/laptop, viruses protection and so on). Is there a special topic or useful links or anything?..
Thanks
I have very old laptops (>7 years) I use as offline systems. As long as you dont use a heavy wallet like e.g. Armory or bitcoin core you should be fine even with older hardware. Old desktop machines (~5 years old) are perfectly fine to run bitcoin core. There are wallets for phones and online wallets that can be used on any system that you could use to post here. In short the hardware of the machine you are using should not be an issue.
Same goes for operation systems. There are wallets for Windows, MacOS, Linux, Android, iOS and probably other less common operation systems.
Viruses, Trojan Horses, Keylogger and malware in general is a risk factor and considering that you plan to store money on your computer you are now a juicier target. Anti Virus Software can only detect what is already known, but it does never hurt to keep it running and most importantly updated.
More important IMHO is to rethink your behaviour. Do you download software just to try it out? If you do so, do you check its source and whether it was manipulated? Do you keep the software you use updated? Browsers and plug-ins mainly, but also other software that can access the internet. Are the passwords you use unique and strong enough? Do you have a habit of creating (offline) backups of critical files?
Not all of these points are important if you just plan to get your feet wet with a fraction of a bitcoin, but incorporating these practices will help you, not only with bitcoin.