* What node is convenient for beginners?
You can run the node in two Modes, One is Pruned, and another one is a Full Node. If you run your computer 24/7 and have more than 1 TB of Free space, You can run a Full Node, which will slightly help the Bitcoin network.
* What type of Tutorials should one learn from?
Follow tranthidung's post Above.
* what kind of software installation recommended to download and the link?
The latest Bitcoin Core 24.0.1 was released. You can download it here
https://bitcointalk.org/bitcoin-24.0.1.torrent. It will download a torrent file, and you can download the official Bitcoin Core using any torrent software.
* what's the best network device or PC is convenient for it?
If you follow the mentioned thread, You will get all answers. But, From my experience, I would recommend using at least 8GB of Ram and 7-8th Gen Processor with multiple cores and 1TB of HDD (SSD if possible) and a fast internet connection to download the blocks quickly.