For the python link, they suggest using certain text editor depending what your operating system is, it doesn't make a difference if you use their suggested text editor or not, other than the color in the pictures should be same in your code, which could be helpful.
Here is a of links of resources to use
Using these links can be very helpful, there are plenty of other websites to chose from to help you learn a certain language. We highly suggest you also buy a text book for that language if you really want to learn it thoroughly. To find a quality books, simply google the language you want to learn, and links to textbooks should appear. Look at the reviews and see which one fits you the best.