I think quite a lot of similar tips like OP in the past as pointed out above me.
8. Diversify your portfolio: Diversify your cryptocurrency portfolio across different assets and exchanges to minimize risk.
Just wanted to comment on this point.
Diversification only relieves you from the risk of volatility losses, it isn't related to the security of the wallet. Or do you mean separate portfolios for long-term holding (large amounts) in cold/offline wallets and routine transactions (small amounts) in hot/online wallets.