Building Muscles

I used to belong to a local gym and would go workout often. But since getting married, having a child, being separated and having not a lot of money I've had to let my gym membership go. I remember though when I went it was awesome because I would first start out of the treadmill, then head to the elliptical, and then to the section where I could lift some weights. I didn't really do much of the lifting weights but I could bench with my legs which was a way for me to tone them. I do remember seeing a lot of young men who were trying to be muscle builders but I wasn't too sure if they were using any muscle builder supplements or not. I never asked either. I guess I will never know unless I join another gym but for now my home is my gym until I can afford it again.