How to make simple furnature on minecraft

Add two of any stairs next to each other

Add one on the end facing inward and it will automatically make a corner

This is the finished look

Or you can make it with wood by placing two wood stairs next to each other

And placing open trap doors on The side instead of more wood stairs

To make a desk put two stairs next to each other upside down

Add a wood stair for the chair

Add trap doors like the couch

Add a single picture (I changed my stairs to one but in the next picture I change it to three).

Then add a black carpet and your done

Here's another picture

To make a lamppost start with three or for fences stack up on each other

Add another fence

Then add a glow stone with trapdoors and your done!