Silver coins

Hi everyone, I’m new to this and would really appreciate some guidance. I’m interested in holding physical silver coins for the long term and had a few questions:

1.	Where do you usually buy your silver coins from? I’m thinking of choosing one type of coin and stacking only that, is this a good approach?

2.	How do you store your silver — at home or in a bank safety deposit box?

3.	Do you think this is a good time to buy silver?

4.	Are silver coins generally better than bars for long-term holding?

If this isn’t the right subreddit, please let me know where I should post instead. Thanks in advance!