Every time I get ready to make a bootable USB for BSD I somehow get hung up on exactly what to do. One thing about Linux that is great is the relative ease of setting up bootable iso. Could you point me to some sort of tutorial that could speed up my transition from Linux to BSD?
Are you looking for a bootable iso to have a live system to play with, or just prepare the install media ?
If it's for a live system, I'd recommend setting up a VM on your current host, and do the install in there.
For the install media, the OpenBSD FAQ lays it all out [1]. As the OS supports multiple platforms, there is information that you do not need (sparc, sparc64, ...). To install on amd64 from a bootable USB, download the installXX.fs from a mirror (where XX is the version), verify the checksums and run :
dd if=installXX.fs of=/dev/sdX bs=1M
Beware of tutorials -- very often, they are valid for a given version of OpenBSD and may fall out of date.
Section 9 from the OpenBSD FAQ is called "Migrating to OpenBSD", so I guess it's a good start.
If you don't want to read the whole FAQ first, then read just enough to install the base system. When you've achieved that, read the afterboot and packages manpages, and again enough of the FAQ to proceed with the other tasks you want to do (configure networking, the firewall, ...).
