からの / までの / への / との / での

の after a particle lets a whole particle phrase describe a noun: はは母から "from my mother" becomes はは母からのてがみ手紙, "a letter from my mother". It works with から, まで, へ, と and で, and the phrase goes in front of the noun it describes.

The particle stays and の is added after it. A particle phrase can't sit straight before a noun.

• × 東京から電車 → 東京からの電車

に becomes への

に never takes の. When a に phrase describes a noun, it switches to へ first.

• × 友達にの手紙 → 友達への手紙

が and を

が and を never take の either. When a verb noun such as 勉強 or 旅行 is described by its object, を becomes plain の.

• × 日本語をの勉強 → 日本語の勉強