Learn Hardcore Japanese: tugi no zyugyou no basyo wo osiete kudasai. - Please tell me the location of the next class.

次の授業 literally means “the next class.” Here 次 (つぎ) means “next” and 授業 (じゅぎょう) means “class” or “lesson.” Together they refer to the upcoming class.

Why are there two の particles in 次の授業の場所?

Japanese often uses の to link nouns.

The first の links 次 (“next”) to 授業 (“class”), making “next class.”
The second の shows a relationship between 授業 (“class”) and 場所 (“place”), i.e. “the place of the next class.”

Why is 場所 marked with を in 場所を教えてください?

The particle を marks 場所 as the direct object of the verb 教える (to teach/tell). Although in English we might just say “Where is…?”, Japanese requires you to mark what you want someone to tell you: “Please tell me (教えてください) the place (場所を).”

What does 教えてください mean and why not use the dictionary form 教える?

教えてください is the polite request form of 教える, literally “please tell/teach me.”

教えて is the -te form of 教える (“to tell”)
ください means “please [do].”
Using 教える alone is just “to tell,” not a polite request.

Could I instead say 次の授業はどこですか?

Yes. 次の授業はどこですか means “Where is the next class?” It’s a direct question.

場所を教えてください is slightly more polite or softer because you’re literally asking someone to inform you.

How polite is 教えてください?

教えてください is 丁寧語 (polite language) appropriate for most formal or semi-formal situations—talking to teachers, staff, or people you don’t know well. For very casual speech with friends, you might say 場所教えて or 場所教えてくれる？

How do you pronounce 次の授業の場所を教えてください?

It’s pronounced:
つぎの　じゅぎょうの　ばしょを　おしえて　ください
(tugi no jugyō no basho o oshiete kudasai)

Can you break down the word order in this sentence?

Yes. Japanese tends to follow [Topic/Modifier] + [Object] + [Verb/request]:

次の授業 (the next class)
の (linker)
場所 (place/location)
を (object marker)
教えて (“tell me,” -te form)
ください (“please”)