Data Science for furniture/decoration retail

I will soon join an Ikea like entreprise ( more high standing). They have a physical+online channel. What are the ressources/advice you would give me for ML projects ( unsupervised/supervised learning.. ). Variables: - Clients - Products - Google Analytics -One survey given to a subset of clients. They already have Recency, frequency, monetary analysis, and want to do more ( include products, online browsing info...) From where to start, what to do... All your ressources ( books, websites...)/advice are welcome :)