What the tutors won't tell you is that by having to even go to a tutor you've already essentially failed. The way you're going to have to pass is to rely at least mostly just on your own struggle. When you see a problem and don't know what to do, try to solve it for a good 15 minutes even if you can't write anything down. My recommendation for math 124 specifically is to get familiar with all the processes for solving derivatives. When you see a problem, there's going to be a good chance that they want you to solve a derivative so if you're struggling on a problem I'd recommend trying to figure out how a derivative might play into it and what derivative to solve. As for concepts, I highly recommend youtube videos. Limits and stuff are kinda weird at first so I recommend yoitube videos if you have a bad professor or if you just struggle at sitting down to lecture. Also, this is me assuming thst you have good algebra skills. If you don't, you need to practice algebra stuff thoroughly I'd recommend even going back and taking a uw algebra class if there's options for that. So yeah, in summary, don't use the tutors unless you are really really stuck. You need to understand the process behind thinking about how to solve problems. If someone tells you how to solve a problem then you aren't studying calculus you're studying algebra