The events calendar is now easier to read for the whole month and includes a signup button which will take you to the discord text channel to signup for trial events. You don't need to have a microphone for trials although it helps, but you do need to be able to listen to the raid leaders.
Also, please do be quiet when listening to the raid leaders and only speak up if you have a really serious objection or suggestion on how to solve a tricky problem, it doesn't help anyone if five people are talking at once. It is the raid leader/s responsibility to know the mechanics and instruct the raiding party. Most of all, have fun and start enjoying earning the BiS gear from ESO Trials.