Greetings there new member who appears to be a fan of Pokémon! And indeed, it is never too late to have fun and such! There are many Customs Lobbies to choose from, so feel free to take a pick.
Well Welcome to the site, but it should be I'm a noob not I'm an noob. You use an when a word that starts with a vowel precedes it. For example, that is an antelope.
*This message has been provided by the Fiesty School of Grammar*