为了
wèi le
Expressing purpose with "weile"
为了 states what something is done for, and the purpose comes first.
为了 + Purpose，Subj. + Verb
How it works
为了钱，他什么都愿意做 — for money, he'd do anything.
The purpose clause opens the sentence. Putting it at the end is possible but much less common.
为了 states a goal; 因为 states a cause. "For money" is 为了钱; "because of money" is 因为钱.
Examples
wèi le qián, tā shén me dōu yuàn yì zuò
为了钱，他什么都愿意做。
For money, he'd do anything.
wèi le xué zhōng wén, tā qù le běi jīng
为了学中文，他去了北京。
He went to Beijing to study Chinese.
wèi le jiàn kāng, nǐ yīng gāi duō yùn dòng
为了健康，你应该多运动。
For your health, you should exercise more.