Some GCs are not good at scheduling, in fact most handyman type don't have that skill.

We didn't have the skill to install $90k worth of custom copper roofing :)

It's also a good idea to start crunching numbers on any prospects - important skill to build to help you evaluate potential investments. 

 Heard of one who used" blood donor " that did mixed martial arts guess he was paid to be the punching bag.

My family owns a tree maintnece company and I have skilled labor that will help me if I BBQ.

There is an art to it in some situations where there aren't a lot of comps, but if you are starting out, start with properties you can comp out easily.  

Even "knowing" this, it is difficult for me to translate into action... even forgetting the pesky timing issue.(1) Real estate is local, strategy is "personal"With Inland Empire crisis fall % of 75%+ ($300k to $70k) and his many skills/resources, I can fully understand why Bruce Norris would be all out and then all in.http://www.thenorrisgroup.com/training/real_estate....However, my areas did not experience -75%.

A deal with a partner, partner's money, partner's skills/knowledge, etc., will make you money at the same time you're learning.

What electrical skill level is required to install a ground line?

Networking and communication skill are key to success in any field you are working.