Adding to this, a lot of projects these days will rely upon some external libraries and APIs. So a new language in this case is just a sauce to consume the util

Adding to this, a lot of projects these days will rely upon some external libraries and APIs. So a new language in this case is just a sauce to consume the utilities. As for the practical aspect of picking up a new language (for a purpose), I'd shamelessly look into an already existing projects along with following whatever language textbook. Learning syntax is likely a simplest step, picking up an idiom is more involved and is often specific to objectives.