So here are a small introduction for the Ju-52 as there are some new things with this plane which can be quite tricky to understand at first sight. This is only a little guide to help with the new things in the Ju-52. To find the more detailed technical info about the plane, you can find it in the game.
Click the images to get a larger version.
First off all some cockpit familiarization(I left out some obvious instruments and some other things that are not so important while flying):
Please ignore the "C°". Late and tired
On the right side of the pilots seat you will see a wheel and a red little knob. The wheel is used to control the stabilizer and flaps. To control the flaps you need to enable flaps control which is done be moving up the red switch(pressing flaps down) then you use the stabilizer controls to move the wheel up/down. To trim the aircraft you have a vertical stabilizer explained above and a yaw trim located infront of the yoke. Its quite normal to use a lot of left rudder while flying so the yaw trim is quite helpful:
On the left side of the yoke you will find a flaps/stabilizer indicator:
To find the fuel/oil level indicator you need to look outside on each wing:
There is also a parking brake located to the right of the copilot:
To use the wheel brakes you need to move down the throttles below 25%. Moving down engine 1 throttle will brake the left wheel, engine 2 throttle will brake both wheels and engine 3 throttle will brake right wheel. This can be complicated without 3 throttle axis but to simplify this you can use the rudder either left or right then press the "wheel brake" key and if the rudder is to the right then engine 3 throttle(right) will go down to 0% and break the right wheel and you will turn right. Works the same with left rudder and if the rudder is neutral and the brake key is pressed then both engine 1&3 throttles will move to 0% and brake both wheels basically working the same way as any other aircraft ingame.
I hope this little guide will help you until something better comes out and feel free to ask questions here so we can help and inform each other about this magnificent plane! Also there may be some things that are incorrect above that I missed.