To set up private sales/breeding:Just go about it like you are selling a wolf normally, but there should be a space to put the pack number you wish to sell it to above the price. Same goes for breeding.
To find familiars:
Familiars are randomly found in explore. You can befriend them if your wolves have high enough social cp.
Herb garden:
First you must have a greenhouse. Then, go to Pack>Pack Activities>Herb Garden
Play:
Click on the wolf who you would like to play with and scroll to the play section. Click the unlocked behavior. You may only do this after exploring.
Specializations:
Go to Pack>Pack Activities>Specializations to set a specialization. You must complete tasks to level it up and gain rewards.
Banner Dimensions:
710 (width) x 150 (height)
Hope that helps! If you have any other questions, feel free to ask. Have fun with premium!
Spring Month: 2 
Night 
Heavy Rain Moon: 
