I was a homeschooling parent. I also have a stronger math background than average, though it isn't anything impressive for this crowd.
I will suggest you try to find a written curriculum from a respectable source as your first step so you have some idea what you need to cover to meet the stated goal.
Then you will want a variety of study materials for the subjects in question. You will want to verify that these are respected materials that are not full of errors.
When I brushed up on math to CLEP Alegebra so I could take college statistics, the computer program I used for self study had errors in it. I knew enough math that I knew what was wrong. I was just rusty and in need of a bit of practice. But it was a program I did not use with my sons to homeschool them because of the errors.
You want to know which materials math geeks like. You want them vetted, basically.
Then use whatever quality materials most appeal to you. Different strokes for different folks and self study let's you pursue whichever materials you like the best.
I will suggest you try to find a written curriculum from a respectable source as your first step so you have some idea what you need to cover to meet the stated goal.
Then you will want a variety of study materials for the subjects in question. You will want to verify that these are respected materials that are not full of errors.
When I brushed up on math to CLEP Alegebra so I could take college statistics, the computer program I used for self study had errors in it. I knew enough math that I knew what was wrong. I was just rusty and in need of a bit of practice. But it was a program I did not use with my sons to homeschool them because of the errors.
You want to know which materials math geeks like. You want them vetted, basically.
Then use whatever quality materials most appeal to you. Different strokes for different folks and self study let's you pursue whichever materials you like the best.