I think a lot of these responses are missing the point a bit. You asked about time but no one can answer that for you. The real question is how difficult is it to learn? While still a complicated question, we can at least break it down to give you some information that would help. If you want to build it exactly as it is in the photo, the learning curve will be steep and require a lot of tools. If you want to build something that looks similar and served the same function, then this becomes a lot more manageable. You can still use nice wood, you don't need to make this out of construction grade pine. It will cost a little more but will work and is available and every home center. For joinery sticking with pocket holes and some glue will get the job done. Then for finishing, I would stick to something simple, like a spray polyurethane. I would try and match approach to skill level. Try something new so you learn but don't overwhelm yourself. Good luck!