How do i switch tanks.?

wait you have to go through the nitrogen cycle if you want your fish to live. Search it on google but if you cant find a good site il give you one once you do that place the bag your fish is in on the water so it floats wait 15 mins youll notice that the temp in the bag has gone up or down. Then push the bag into the water (gently) and open the bag then wait till your fish comes out and you're done!