This is the 849th most frequent Japanese word.
次に
"Next" or "after that."
In this sentence, "次に" is used as a conjunction to indicate the next step in a sequence of actions.
次に、進むべき道を決めよう。
Next, let's decide the path to take.
Here, "次に" serves to specify the following destination in a series.
次に訪れる場所は有名な神社です。
The next place we'll visit is a famous shrine.
In this context, "次に" functions as an introductory phrase indicating the subsequent topic to discuss.