Thank You for that info

I am also new to this forum. I collected and played with American Fllyer for many years had close to 100 sets. Than we decided to down size to a condo and all went. Now the Lovely wife bought us a small house about a year gao, so I decided it is time to set up a garden railroad. I recently and the just came in ordered two set. They both came with steel track. I assume that I will need to go with a brass Track In the attic I have some LBG track will these interchange? Thank you