Before you start the project there is one thing you should think about. The design I made has a big crib area, this made it hard to find a fitting mattress, you might want to find a mattress first and adjust the sizes in the blueprint accordingly.
Step 1: Tool and supplies
hand saw (you can use a table saw for most of the parts)
sander (with soft and rough sanding paper)
screws (about 30 not longer than the thickness of the wood and 4 slightly longer)
4 metal corner brackets
fabric (50x50cm for the upholstery 100x100 for the crib)
foam mattress (42x44cm for upholstery and 96x44cm for the crib)
For this project you need to get whole wood (not MDF, plywood or sandwich boards), I got some pine plates. The 3 big pieces (the sides and the base) are 2.8cm thick, the rest are1.8cm. I recommend you consult with a professional if you decide to use anything different.
The sizes of the plates you will need are specified in the blueprint. In addition you will need a 42X44cm piece of any wood for the upholstery (thick enough so the staples wont go through).
Step 2: Blueprint and model
As Imsaid before, you might want to adjust some of sizes to better suit your needs.
I also recommend building a scaled model if you have the skill. I used some spare 4mm plywood to build a 1:16 model based on the blueprint. as you can see the scaled model is slightly different from the life size, that's because I made some changes after seeing the model, that's why I recommend you build one.