Advice? New to this

Welcome to the forum.

Did you start with dry rock and sand or did you buy some live rock from another reefer or store?
At this time I wouldn't even worry about a water change. If you're converting ammonia to nitrite to nitrate just let it run its coarse. A piece of dead shrimp in there to feed the beneficial biological life and kick start the population would also help. When you see the ammonia spike, then the nitrite spike, then the nitrate rise you are on the right track. Once that happens I would start doing the water changes and slowly add some livestock. One or two small fish, then monitor the basic levels and see how the tank reacts. Take it slow and you'll be much more successful in the hobby.

As for skimmers I second the reef octopus brand. Great price for the performance.
LED lighting is so hard to give recommendations. There are so many fixtures out there, and people have had success with all kinds of them. What's your budget? That will narrow it down some then you can search the fixtures that fit your budget and get more opinions on them.

If you need any help or have any questions don't hesitate to ask.

 

As you can see, you came to the right place! You can also search the forum for some common terms and you might find some useful threads. That's one of the nice things about an established community with a lot of content.

"high" is a bit of a relative term, and if your LFS (Local Fish Store) is telling you this, then take that with a grain of salt, no pun intended. At a minimum, you should grab yourself some basic test kits. No need for $$ at this point, API will do just fine (Ammonia, Nitrite, and Nitrate is all you need). These will get you through the nitrogen cycle phase of your tank. After that, Ammonia and Nitrite test kits should really never be needed unless you see big problems like a cloudy tank or dead/dying livestock (in which case you would test for Ammonia).

You need to know for yourself what your levels are at, and as @blackx-runner said, just let it run it's course. As long as ammonia is under 4ppm, the nitrogen cycle will continue, and you should let it (ammonia will probably be 1-2ppm for a while). Doing a PWC will not hurt anything though.

RODI is a must-have.

On the tank cycle, some people don't like to hear this but the true maturing cycle of a reef tank is more like 6 months, even longer. Here's a good read (go to #15)

http://www.reefkeeping.com/issues/2004-01/eb/

So when the hair algae outbreak comes 3 months from now, don't be surprised. Also if you bought (wet) live rock, you have no idea what the maintenance history of the system was that contained that rock. If it was poorly maintained (as many tanks are before people give up and get out) then you might have a lot of nutrients built up in them that will show up as hair algae growth for a long time, in a display tank. So just be aware of this, and don't go popping for dozens of high end frags right away, because if you have to remove your rock and "cook" it (which is not boiling it) then you could lose those frags if they are encrusted to the rock.

Just some food for thought. Better to know up front as much as possible so you can enjoy the hobby instead of end up getting out after a few months because of one problem after another!!