

かばんは椅子の横に置くといいですよ。
傘はドアの横に置く?
テレビの横に置く棚を買いたいです。
"よこにおく(横に置く)" is in the lesson "Verbs 19" (Level 33), along with 11 other useful words. LinDuo has 180 topic lessons like this one, 2,379 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.