I had never had a male dog either. Snickers is 8 months old. He has been neutred. He does lift his leg when he potties outside, but not on anything. Just out in the open grass!
Inside, when he potties on the floor (a daily habit!) he just squats. Never has lifted his leg on any furniture. Still loves to hump the side of his bed though. Don't know if that will ever stop.... He is very loving and very affectionate and I wouldn't trade him for the world - accidents and all!! Even my husband that "refused to have an indoor dog" kisses on him, feeds him off of his fork,
and brags him up to everyone!!!