Thanks, both of you! I decided to try 3DS Trial, as it is a requirement to have experience with 3DS to attend the universities I’ve been looking at, but I’ll try Blender too 
I have one last question; when I press “w” to move my objects or “r” or any of the other tools, every time I, for example, move it it moves in “ticks”. This is very useful, but when I want to be precise down to the nearest millimeter, what do I do?