first of all i must say it is a great decision to invest in BTC and as far i know there are a lot of ways where you can invest and make a good profit among them buy and store coin is my fav one.
On many cryptobirds there is an opportunity to buy bitcoin using a plastic card. I will not advertise not one of them. Open the site
https://coinmarketcap.com and there you can find a large list.