Boxing is a tough sport to learn and the older you get the more difficult it can be to start.
I would recommend learning your skills in a boxing gym however, you can definitely learn the basics at home. Not only can you learn boxing at home but you can also increase your skills without any gym or gym equipment.
Here is my most recommended website for learning how to box.
Expert boxing has several courses online for some reasonable prices.
Also Check out his YouTube channel for some great How to videos.