Lauren, I remember when I took math in undergrad and the only resources I had were the campus math lab and my math teacher (who worked tirelessly to help me work through algebra). Now, there are a number of resources including web pages and YouTube. You would be amazed at the number of actual teachers and/or professors with channels dedicated to helping people learn different subjects. A quick search came up with these sites and/or channels:
Apparently, this has got to be one of the biggest challenges college students face. Here's my piece of advice; ensure you are always present in classes and ask questions when lost. However, YouTube remains a great tool. Take out time, go to YouTube, watch videos that address your challenges. Likewise, you can check out school libraries to seek helpful books and materials.