How do I compile an Linux? Is there something like a guide? (I have Windows, but I am thinking to try Ubuntu)
Download the source first:
git clone https://bitbucket.org/zurcoin/zurcoin
Change to the directory:
cd zurcoin
Since it is a QT project, generate the makefiles
qmake "USE_UPNP=-"
Now just compile, executable will be created after a minute or so ...
make
.. or for faster compilation, you can compile in more threads, ideally use the same number as number of processors/processor cores:
make -j8
... done

If compile fails, you may be missing some dependencies. Not sure what exactly do you need, but this may fix it on Ubuntu
sudo apt-get install libboost-dev libboost-program-options-dev libqt4-dev
.. after installing dependencies, try again.