###IF you are using Raspian many of these tasks are unescessary. With Raspbian:
- SSH is ready to go out of the box
- default runlevel is 3
- many items can be configured with raspi-config tool
###Adding more swap for high memory use concerns
sudo dd if=/dev/zero of=/swap bs=1M count=1024
sudo mkswap /swap
sudo swapon /swap