Learn Turkish: Yeni bir dil öğrenirken öncelikle kelime öğrenmek lazım. - When learning a new language, first of all you need to learn words.

It uses the suffix -(y)ken, which means "while" or "when". For verbs, it's almost always attached to the aorist (general present tense) form. So, the verb öğrenmek (to learn) becomes öğrenir (learns), and adding -ken makes it öğrenirken (while/when learning).

Why is the word order "yeni bir dil" instead of "bir yeni dil"?

In Turkish, when a noun is modified by both an adjective and the indefinite article bir (a/an), the standard order is Adjective + bir + Noun. Saying bir yeni dil sounds unnatural; you must put the describing word first, resulting in yeni bir dil.

Why is kelime singular here when the English translation says "words"?

When a noun is the general, unspecified object of a verb—like "word-learning" or "apple-picking"—Turkish keeps it singular. Because the sentence is talking about the general concept of learning vocabulary rather than specific words, kelime doesn't need the plural suffix -ler.

How does the structure "öğrenmek lazım" work?

Lazım is an adjective meaning "necessary" or "needed". To make a general statement that "it is necessary to do something", you just pair the infinitive verb (ending in -mak or -mek) with lazım. Therefore, öğrenmek lazım translates to "learning is necessary" or "you need to learn".