Set default on next reboot to multi-user mode
# systemctl set-default multi-user.target
Set default on next reboot to graphical mode
# systemctl set-default graphical.target
In a pinch during startup, you can also change the target mode. At the grub menu screen, select a kernel version you want to boot in with and select 'e' to edit. Once you are in edit mode, you'll want to find the line similar to this below and add the text in bold.
linux /vmlinuz-3.9.0-0.fc19.x86_64 root=/dev/VolGroup00/LogVol00 rhgb quiet nvidia-drm.modeset=1 \
When using Fedora with NVidia video, this is a good writeup https://www.if-not-true-then-false.com/2015/fedora-nvidia-guide/6/