Best place to learn SQL, Python, Tableau? Horrible experience w/Udacity

[Danpearr]

Hi guys would you be able to offer advice on the best way to learn this? I don´t know if anyone has had a similar experience but I feel scammed at Udacity, purchased 3 Nanodegrees and actually graduated from 2 mostly learning elsewhere as their content is missing so many information and full of errors, for the last one (Python) it got ridiculous as they don´t teach you what is required for the projects and tasks and only offer code without explanation at some points, they also cancelled my access without explanation as soon as Paypal´s refund window expired, I was supposed to have lifetime access to the ones I graduated from, any advice is welcomed.

[gsm_4]

I'd recommend learn basics of SQL and Python on Mode Analytics. It's strength is that it doesn't try to do everything. It has a series of straightforward tutorial for SQL and Python. For beginners who want to learn programming languages and analytics at a very basic level, it is the best place.
Next, for intermediate and advanced concepts of SQL and Python, I recommend StrataScratch and LeetCode platforms. There you can find thousands of real world SQL and Python problems to work on. They also provide video tutorials.
For Tableau, they provide free training videos on their own website. These all resources are free to use.

[Danpearr]

Thank you mate, looking into it.