To join an existing clan, just make sure you are logged in the PopRe website, and aim to CLANS. Then, pick the clan you want to join. Click in REQUEST TO JOIN CLAN.

 

You should warn that clan admin's before and after doing that, so they will either accept or reject you.

 

Don't forget that in most of the clans (at least the bigger ones), you will need to log in their website, and read the application form. Then, make an application under your nick, rule by rule. You will be discussed and after some days or weeks, you will get denied, accepted, or made a recruit.

 

Don't forget, many clans don't like people who apply to every clan, try to be as serious as you can, have a decent attitude and skill. Make sure to play as many games as possible with your desired clan's players, so they will get to know you!