I don't have that experience or too much knowledge outside of my own research.

It takes time and knowledge.

As I’m saving up for my first investment, I would like to learn more about the industry - and it would be nice to earn some income while doing so.Are there any specific skills or knowledge I need to secure a VA side gig? 

Look for some of those to go in as an LP (limited partner) and learn and grow your knowledge, skills and investment money so you'll be ready for the next accredited deal. 

Hard work and knowledge and drive.

While podcasts, books, seminars, and websites offer general knowledge, you'll buy a specific property in a specific location, subject to local rules and regulations.

It could be a nice opportunity however I would be certain they will want you to make up the difference between $250,000 and whatever is left on the mortgage which btw in my opinion should be done with lender's knowledge and approval. 

As important as due diligence, analysis, knowledge of the property type, track record of the syndicator, correctly predicting economic trends, and timing is, the number 1 way to avoid a devastating loss is NEVER INVEST MORE THAN 10% OF YOUR INVESTABLE ASSETS IN ANY ONE DEAL.  

The real estate agents who are knowledgeable and doing a lot of deals each month will be the ones who can get you these accurate numbers.

Purchasing a “distressed” property and “repositioning” it requires significant capital for improvements, build outs, holding costs, maintenance.In looking for that “needle in a haystack” slam dunk great deal you’re competing with very knowledgable, greatly experienced investors with the cash to make no contingency offers and close in a few days.