i have made tons of models for unity but i dont know how to put them in.
Export the model as an .fbx file, then simply copy the model into your projects 'Assets' folder. When you focus on the Unity window again, the Assets folder will refresh and you can then drag your model onto the scene window and it should appear.
Actually, you should just be able to have the .blend models in your Asset folder (or subfolder thereof), as Unity reads Blender files directly.