(1) First of as a beginner it's advisable when choosing a wallet that you go for a hot wallet like metamask, coinbase etc over cold wallets. Though overall cold wallets are better than hot wallets as they are not internet based, making them less vulnerable to online hacks. So if later on you decide to diversify your assets, you can use the both hot and cold wallets. But if you're just starting, hot wallets would be advisable I'd recommend coinbase.
You recommend Coinbase? But hope not Coinbase custodial wallet or exchange.
Metamask does not support bitcoin.
What you should first recommend are cold wallets that are open source, they are the best, but it is wired that you know the benefit of cold wallets but recommending hot wallets over them, that is absurd and wrong.
(4) I know I made this thread specifically for bitcoin but how can you be a good investor if you don't expand your horizon. It's advisable to try out other Altcoins I'd recommend ethereum or ripple. Don't put all your eggs in one basket always research to see which coins are thriving well, check out their past and possible future, ask questions this is where those your sources come in.
In other words just try and choose your assets wisely.
Those that went for luna and ftt did not want to put their money in one basket and they lost huge amount of money and regret what they did, just know that bitcoin is reliable and not disappointing like altcoins. But if anyone decides to just gamble with altcoins, it is not bad in bear time like this, but they should know that they are gambling and should be done with small amount of money which they can afford to lose.
I recommended online wallets for those just starting crypto currency. Cold wallets are really expensive. An external storage source costs almost 300-350 dollars as of now.
I also mentioned that's if you actually read the post that overall cold wallets are better but " for a beginner it's advisable you start with online wallets, later on if you wish to diversify your assets you could purchase a cold wallet"
Now from your second reply I can see you're against the Altcoin idea. Yes it's a risk but isn't that all crypto is all about "sometimes you win, sometimes you lose".
You are right though, anyone venturing into Altcoins should start up with a small amount just incase.