I think it is depending on the what country you are because their are some of website that selling and buying bitcoin in that country just like here in my country that even banks, pawnshop, remittances was selling and buying bitcoin so it is easy for us to invest and to buy bitcoin for trading. But in your case I think theirs a website that selling bitcoin and you need to pay via PayPal or credit card just try to research.

If I am not mistaken you are wearing a signature of a various exchanges where bitcoins can be bought with various means of payment like credit card , bank transfer and other online payment. You can buy from those exchanges, yet my best is localbitcoins.

in cex.io is the only site where i can buy witout any troubles. Im from nicaragua in central america. Almost avery other page to buy crypto are banned by the banks. i also have tried turn the crypto into fiat and send it in to my bank account without any troubles in that page .
coinmama only worked in the near february of this year, after that was already  banned

There are so so many places one can buy it's bitcoin depending on which one is faster and beneficial. Some escrows offers this with nice deal( got to be reliable escrows not the fraud ones). You can also buy from exchanges but just that one have to wait till the other are been fillee and more so not all of exchanges are good places to buy bitcoin but some are just worth it, to mention few (bittrex, binance, polonix etc) just that the transaction fee might be exorbitant.

I am never tried buying bitcoin with credit card but i think many exchanger can use credit card for buying bitcoin. BUt i think buying bitcoin in coinbase is recomended because its reputable exchanger

In my opinion coin-base is good for buying bitcoin and it  is very easy process to buy bitcoin from that..

There are many exchange available where you can buy crypto coins. I buy on exchange but store it on web wallet because there is safer to keep while waiting for the price to increase again. On exchange you can set the limit on how much you are going to buy so nothing to worry that you miss the moment to invest in more lower price.

i buy with coinbase and btc atm. btc atm is like 300$ difference. and 7% fee. coinbase logs your deposits and withdraw. i tried changelly and they were asking for id card. they have btc atm with less fees but it is far where i live. in the bay area.

in the past i mine btc. but now i think the market not have future so i don't join this

As a newbie when i first got into bitcoin i chose coinbase as it is easy and safe. However, after trading for a while i have switched to localbitcoins as it has better rates than coinbase