These days information is everywhere.
Looks and style is easy to obtain.
For furniture I'd make two classifications for an apartment and then a house. If you're just in an apartment.
A quick hashtag search #bachelorpad
U can get ideas off Instagram or Pinterest (my girl got me pinning stuff)
Then search overstock.com, which is A step up from IKEA, for similar looks. Now when you're ready to invest in furniture and signature pieces there is another level. But u can start there.
Same for clothes. Search then find the look on ASOS.com which is a step up from Zara or H&M