What is a good amount of Bitcoin to buy for first time buyers new to the crypto market? What kind of return can you expect to see within a week?
Any amount is good for first time buyer, invest what you can afford and even if you can't afford a lot, you can buy it every month until you feel you have enough. Investment takes time, if you want an instant gain, you should join a pump and dump group. Although sometimes you can get a lot of profit within one week if your timing is good, wait at least 3 month for your investment to bear something.
Like anybody will always say, invest whatever your minds tell you or whatever your risk level can drive you to invest. So many people have taken a huge risk in the past with respect to going all in on bitcoin and despite the condemnations, they never bothered and just kept on going. Now, they are reaping a huge benefit.
I usually don't tell anyone not to do what they wish, but as long as they know they can accept the outcome either positively or negatively is what matters.