To Make a casual CS:GO team and eventually make it to the bigger leagues, or just laying low and doing a couple tournaments casually, depends on what the people recruited have to say on the matter.
A group of people who enjoy a game. Join if you want.
This team is no longer recruiting new players. You can either wait until their next recruitment campaign, or become premium to apply in their waiting list. This way, they'll be notified that you're interesting in joining them.