Ok Let me say this. I am new. I did a search might of put in the wrong words for it to work. I see all the posts what to take and everything else. What about when I get to the park! How do...
Get the trailer into the spot watching all sides and also looking up for branches.
Make sure the utilities will reach.
Make sure the slide will open.
Check side to side level and level the low side.
Place blocks firmly behind wheels.
Back trailer slightly so the rear tires are starting to slightly climb the blocks.
Hold the brakes firmly and have your helper apply front blocks firmly.
Put tow vehicle in neutral and let trailer settle between the blocks. (Removes a lot of wiggle)
Disconnect hitch but leave the safety chains hooked up.
Level trailer front to back.
Once you are sure the trailer is stationary and not prone to rolling disconnect the trailer from the tow vehicle.
Crank down the stabilizers. I apply about 1/4 to 1/2 turn after they contact the ground.
If you have to extend the stabilizer more than half way, use a block under it to take up the extra space. (It's more stable this way)
Hookup utilities, extend the awning and start camping.
Teardown in the reverse order.
My one extra bit of advice is that the safety chains are always the last thing you disconnect, and the first thing you reconnect every time. I've read more than once on the forum of someone's trailer starting to roll away when they unhitched and they had already disconnected the chains.