This little smoker is a great little unit. As long as you've got a little patience and curiosity, it'll treat you well.
I don't know if I would recommend that video, though. He starts talking about adding a third and maybe a fourth rack, which for me might be biting off a bit more than I could chew.
If you've got the time, spend an afternoon or two researching the ECB here and elsewhere. You can even do it during your first smoke. I'd recommend the following mods in the following order:
1. Drill holes in the charcoal pan.
2. Add a grate to the charcoal pan to lift the coals up off of the bottom.
3. Move the legs to the outside of the unit (no need to drill new holes).
4. Find two bricks to set the charcoal pan on (bricks should be wide-side-down).
5. Don't use charcoal briquettes, because they generate too much ash, which will clog your airways. Use lump charcoal instead.
6. Find a little meat thermometer, drill a tight hole in the dome opposite the warm/ideal/hot gauge, and slide it in.
After making the above mods, I'd say you're ready for your first few smokes. Sit down and spend an afternoon with it. For your first smoke, I'd recommend a pork butt, which is pretty low-maintenance but high-reward.
I'm having a blast with my ECB, and would be happy to help you out if need be. Do make sure to add your location to your profile. It makes it easier for people to give you advice.