I have a couple of friends that home schooled their son.
They spoke very highly of the Saxon Math program.
There are also some great lectures and videos on youtube and of course Kahn Academy.
We used Saxon math for our kids when we homeschooled and when they went to college, they all got in in then honors program at their respective universities and took calc their first semester instead of remedial math to get them ready for college level calc.
smart friends!