Click on your new server and a window like this will popup. Just fill it out like I have with your name and our password

Just click the connect button and your on teamspeak. This is the new face of TS

I would not recommend you use voice activation because it is very sensitive. Just ask Necro ;-) if you are going to use it turn the level way up or you'll pick up every little sound in your room. just go to Settings>Sound Input/Output and put voice activation to this level or above. It's close to shout but trust me the TS picks up a lot of sound so set it high

I hope this helps you at least get on. During the next week or two we will learn all of the features. This is just a guide to get you online. For any help just get on the forums and ask.