Newbie Q: re bitcoin demo platform

I’m an absolute beginner.
Have a deep interest in bitcoin and would love to enter the btc price trading market.
I’ve registered a couple of demo platforms but they don’t seem to offer a btc/usd or btc/gbp option.
Can anyone advise a route for me to take - one small and careful step at a time?

tradingview has what you need

Are you trying to buy (own) bitcoin? Or looking to trade bitcoin CFDs?

There’s a big difference between the two.

If the former, check out Coinbase.

If the latter, there are several CFD brokers to choose from such as CityIndex, IG Group, Plus500, CMC Markets, AvaTrade, eToro, Admiral Markets, easyMarkets, etc.