To use a Wayshrine you will first need to activate and unlock it by visiting it while alive.
You will then be able to travel to and from your activated Wayshrines as a spirit by first navigating to one and then departing from it, as well as view their locations on your map.
When traveling by Wayshrine, your spirit will be sucked through a conduit like a pneumatic tube toward the destination location over a period of time. This is not planned to be a simple loading screen, but rather you will see the world moving by around you so that you may see how close you are to your destination, accompanied by etherworld appropriate screen VFX and sounds.
There will also be lore notes which talk about what is happening during this process, and how it is possible within the context of the world.
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but why when they could just make it so you can teleport just like you would out of haven or to home priest??? Why can't you fucking choose which priest to teleport to? Why does it have to be lore or activated. I said I would sub if they just did this, and I am still ON FENCE (my main sub expires today, it says, but my 2nd is still on for a few more days.) MO is always disappointing me. They choose weird hills to die on.
Edit: still shocked they are gonna waste resources having people derping thru the etherworld instead of just adding a port haha. SHITTT.