Hands-on training/experience, I believe, is the best and fastest way to learn anything. 

However they offer mountains of training, pay for your advertising materials, set you up with a list of 50 to 75 addresses for mailers, and pay 25% of your photo and video expenses. 

Trainings, mentorships & etc. 1.

Would pictures and videos help training of new team members/new investors as far as what to look for/deal breakers of when not to invest?

Sounds obvious right, but Keller Williams has the best training program but their fees are higher than most brokerages because of it.

I know the barrier to entry involves some education (80 hour online training and online exam) plus some in-person field training with a licensed inspector.

Most employees of Merrill and much of the mainstream financial services industry are not at all trained on self-directed retirement plans and will say just about anything to get you to not move your money away from them.When you setup a Solo 401(k), you are engaging a provider to create a legal entity for you in the form of a 401(k) retirement trust.  

I'd try to find a job that give you regular hours and is in a field that you have some experience or training/education. 

Training someone on those platforms would be a pain.

The same training by the LO/WLO eductors works for sub-to, its in the negotiation where you end up.