Welcome to Cardschat.
Before you spend any money, anywhere, read these
Then spend a week reading our threads. Then when you think you are ready to experiment, start with play money games. Download the sites here
When you can at least sort of keep up at play money games you might consider the possibility of depositing. But unless you are rich, learn to regularly beat the play money games before you go real.
Conventional wisdom does not require that you regularly beat the play money games. But they offer a seriously good glimpse into what you will be seeing at real money
games. Play is a bit more predictable, and thus considered better at real money games, usually.