You don't need to have any good knowledge before you can invest into bitcoin, all you need to know is the basics, which OP already know, which is to buy and transfer to your wallet. As long as OP has already made up his mind to hold for a long term, he will be learning along side with growing his investment.
Financial management, patience, consistency and discipline is what a newbie investor needs for him to be able to hodli his bitcoin for as long as he wants to hodli. Don't make it sound as if hodli is something that need market analysis or to know the technical aspect of bitcoin. If you know how to save money from young age, it wouldn't be a big challenge to hodli
There should be proper knowledge about Bitcoin before deciding to begin investing in it, not just buying and transferring to wallets but we need to consider other risk factors associated with Bitcoin. Most people who do invest with poor knowledge of what they are putting their money into always ends up with loosing due to panic of the price going down, getting involved with scammers or technical problems which will cost them loosing their Bitcoin.
All this are associated risk factors which if their is enough proper knowledge about Bitcoin can be avoided, then their will be no chances of becoming a victim.