The default node for Westend was down on Monday for a while. It is once again available and you should be able to access Westend from Polkadot-JS.
If you are interested in being a validator on Kusama, check out the Thousand Validators Program! https://thousand-validators.kusama.network/#/getting-started
There are quite a few Kusama tips waiting for votes! https://polkadot.js.org/apps/?rpc=wss%3A%2F%2Fkusama-rpc.polkadot.io#/treasury/tips
For new followers, have you seen all the projects from Hackusama? Check out Unique Network, Subdex, and Kusama Academy. https://hackusama.devpost.com/project-gallery
No candidates for Kappa Sigma Mu today. You'll have to bid lower or wait for the pot to grow a bit... https://polkadot.js.org/apps/?rpc=wss%3A%2F%2Fkusama-rpc.polkadot.io#/society
Tips and Tricks
Have you backed up all of your accounts? Understand how accounts work and how to back your accounts up here: https://wiki.polkadot.network/docs/en/learn-account-restore