Do not try any of the fresh start servers. You will be disappointed and quit. Do not open any purses, dropped weapons, armor, gear that require labor to open. They are worthless. Unless you get 100k labor points into opening them. Then they might be worth opening.
You want to make at least 3 silver per labor point. And thats not very good number. So when calculating labor to see if something is worth doing use that system. The higher a profession the lower labor required to do things in that profession. You can decrease labor cost by up to 40% but that takes 100 days.
You can regrade to Celestial with normal regrade scrolls.
I've been told to use the resplenda regrade scrolls at Unique if anyone knows better please chime in.
If you are smart then you will only have to pay first month subscription and the rest you buy with ingame gold. I'm making 260g a day just off my farms with only 1h of playtime split into 30minute sessions.
Join a guild they have tons of free resources because everyone is rich.
Obsidian is the gear you will be using and upgrading. It doesn't explode and you want to regrade it at T1 as high as you want because it costs more to regrade at T7.
Do not buy real estate. There is plenty of free land. Only buy if something is already build like a treehouse or something. I got a treehouse in a prime location for 1600g. It costs about 1k just for resources to build a treehouse so it was a great deal. Considering the treehouse blueprint is 5k at least.