with which currency is best to start

what currency should it cost to mine at the beginning of its journey?

Not sure exactly what you mean. If you're talking about mining I would go with Ethereum. I would also go with Ethereum if you are talking about investments. It seems to have the most future potential and I believe it will shape web 3.0.

can you explain more about it ......................................

I would like to know a bit more myself as well if you dont mind :- )

you can go with monero ......................................

try the xmr its on 130$ now and its going up with time

I suggest you look at up-to-date currency information and track their value changes over weeks and months to fully understand how they work and to have an understanding of how much you will profit from them.

Go Ethereum best new startup coin there is!!! Monero has worked well too