I haven't seen Carter videos but usually i hone our knives freehand. It comes natural, but it needs a some amount of practice. So do not start practicing with your best knives.
Some large knives and specially tools like plane or chisel blades have bevels so wide that it is easy to feel the right angle when honing. With narrower bevels it just comes in time.
There's also some honing guides available (Veritas etc), but i've found them too impractical. Tormek and some other makers has a bulletproof systems for honing any kind of tools but that is of course totally different than honing freehand.