This is the 72nd most frequent Russian word.
так
"Так" means "so," "thus," "like this," or "in this way" in English.
'Так' is used as an intensifier, similar to 'so' in English, to emphasize the adjective 'хорошо' (nice).
Так хорошо сейчас на улице.
It's so nice outside right now.
'Так' is used as an introductory phrase, equivalent to 'Alright' or 'Let's' to begin the process.
Так, начнем урок.
Alright, let's start the lesson.
'Так' is used to denote 'in the manner of' or 'the way' something is done, referring to the method specified.