The first menu option under "Groups" will help you "add a group". There should be a spanish version of the site, but I have not tested it out. I imagine if your browser tells the site to return in spanish, you will see it in spanish. Let me know how that goes?
Welcome to Mohawks Rock Pokehawk. Great to have a member here from Guatemala. I'm not sure we have too many from that country, but you can use the advanced member search to find out. If not you may have to start a Guatemala group.