Learn Turkish: Bazen erken giyiniyorum. - I sometimes get dressed early.

Yes! Giymek means "to put on" or "to wear" a specific item of clothing, like a shirt or shoes. Giyinmek means "to get dressed" in general. The extra -in- in the middle changes the meaning from dressing an object to dressing yourself.

The English translation says "I get dressed" as a habit, but giyiniyorum has the continuous ending -yor. Why?

In Turkish, the present continuous tense (-yor) is very often used for regular habits and routines, not just for things happening right now. It is perfectly natural to use it with frequency words like bazen (sometimes).

Where do time words like bazen and erken usually go in a sentence?

Turkish word order is flexible, but generally, frequency words like bazen (sometimes) go at or near the very beginning of the sentence. Words describing the specific time or manner of the action, like erken (early), go closer to the verb.

How does this fit with the current lesson about saat kaçta (at what time)?

If someone asks Saat kaçta giyiniyorsun? (At what time do you get dressed?), they want an exact time, like Saat yedide (At seven). This sentence answers a bit more vaguely with erken (early). If you wanted to combine them, you just put the exact time before the verb: Bazen saat yedide erken giyiniyorum. (Sometimes I get dressed early at 7:00).