This is good to know before holding, to know more about harder wallets, generation private keys offline. Unlike before that most people use paper wallet to hodl, hardware wallets are common now, reading about the it using the link above will help in operaring hardware wallet in safe ways.
First of all, if you guys new to this term, the word "hodl" means it's a slang in the cryptocurrency community for holding the cryptocurrency rather than selling it.
Hodl could be a slang before but it is no more a slang, it is now one of the terminologies used when talking about cryptocurrencies, we can see in while reading crypto news or on articles partaining to cryptocurrencies. So, it is now official.
Lastly, while talking about hodling, there should be another article that should talk about the crypto price aspect, because, if bitcoin is bought at the wrong time when price is high, it can results to losses. A good instance is someone that wants to hodl bitcoin and bought it in December 17, 2017 at a price of $20000, the person is losing now. So, hodlers should also know the basics about how bitcoin market price fluctuates for not to hold at the wrong time.