Can I do the work myself?

[Greg Rollins]

BP, 

I am getting ready to head home from deployment and I am going to move into my house that I bought while I was gone. The plan is to live in it, flip it, try to house hack it with Air BnB then sell it with a hopeful profit months to a couple years down the road. 

I would like to do most/all of the work on the house myself to cut down on costs as well as use it as a huge learning experience for my way forward towards managing contractors in my future flipping business. 

The question I have is: Does the work I do need to be certified in any way? Can I do it myself without having a contractors license? Do I simply need an inspector to come out and verify the work was done to code?My biggest concern is that I would go in, do a bunch of the work and have to rip it out or have it re-done because I didn't cross all my "T"s and dot all my "I"s for the legal part of the renovation.

Thanks for the help!

Greg