How can I effectively use online learning platforms to prepare for a competitive coding bootcamp?

I totally get where you're coming from - I've been in your shoes before, trying to prep for a coding bootcamp and feeling a bit overwhelmed by all the online resources out there. From my experience, I think it's great that you're using a combination of platforms like Coursera, Udemy, and edX to learn programming concepts. What I would suggest is to not just stick to the set curriculum on each platform, but also explore other resources and practice opportunities that they offer.

For example, you could try doing some of the coding challenges and exercises on platforms like LeetCode, HackerRank, or CodeWars, which can help you practice your coding skills in a more hands-on way. You could also try working on some personal projects or contributing to open-source projects on GitHub, which can help you gain more practical experience and build a portfolio of your work. I wouldn't say you should focus on one platform over the others, but rather use them in conjunction with other resources to get a more well-rounded learning experience.

I think the key is to find a balance between learning concepts and practicing your skills, and to not be afraid to try out new things and experiment with different approaches. You could also try joining online communities or forums, like Reddit's r/learnprogramming, to connect with other coders and get feedback on your work. This can be a great way to stay motivated and get support when you're feeling stuck or unsure about something.

Overall, I think you're on the right track by using online learning platforms to prep for your coding bootcamp, and with a bit of experimentation and exploration, you can find a approach that works best for you. Good luck with your bootcamp, and I hope you find the resources and support you need to succeed!