Hey Vickywin100 and welcome to PRO! :Grin:
I'd advise you to check our Game Guides forum and the PRO Wiki :)
If you need help, take a look to our Resolution Center forum, or seek out Live Chat support via our Official Discord Server, we’ll do our best to assist you.
Feel free to also check out our Facebook Page, Twitter, Youtube Channel, and Instagram as well !
Regarding the servers, the content is the same on each and every one of them, but:
Red is the oldest server, Blue is the most populated one, due to being the one by default,
Yellow is the latest, but still over a year old.
In the end, only the people on them are different :Smile:
Good luck on your journey, and have a great day :Angel:
thq