Does Steam need something like Ps plus or Xbox live?

If you need something like ps plus or xbox live for Steam you can play online

The program Steam itself is completely free,

just create an account, sign up then download software and see what games there are there. From free to play over 60 euro everything.

You do not need an abo else valve would have a problem but you need an internet account Cola Energy Time and KEKSE

No, in contrast to consoles, the online service is offered here completely free of charge, which among other things can save a lot of money