I have a few clients who are trying to sell / buy land and mobile home type investments, I'm curious do you have a good source for things to know, the code for mobile home parks, etc? 

Work with an independent agent that has access to multiple companies and can explain your options.

I’m not going to name names… and get sued and blacklisted…So…. no… but ….. just…look…And…before you agree to buy your next property  from any of these sources,Explain that you want to see a Prelim Hud-1 / financial disclosure first.….INCLUDING …ALL… COSTS, FEES , CONSULTING FEES.You will likely get one of the two following responses..1) “ the hud 1 isn’t available”… if you are financing…..this is FALSE…the disclosure IS available..as it is one of the benchmark doc FOR the financing.Or..2) that wholesaler, guru, or turn key company says that they don’t want to do business with you… what they Actually just taught you.. is that you don’t want to do business with them..OOOHHH.OPTION THREE..no problem Mr Buyer… here’s the Financial Disclosure… note line 36 near the bottom on the right column… there’s a “ consulting fee”… that’s my cost .Hmmmm I know where I’m sending my business.I would love to help build your financial future ..

(Many options with this, and I'm happy to chat offline!) 

when lookin at skip tracing providers, find one that has pricing and payment options available based on the volume you'll be submitting.

You can find a company that has flexible spending options based on the volume you'll be submitting, and doesn't charge extra for the double skip process.

Education is the key.Some of the professional organizations, such as the American Association of Private Lenders and the CMA, are good sources of lending attorneys, as well as offering excellent webinars and courses.

There may be other options there.But, from a strategic angle, that is where a random guy on the internet jumps in and says "You might be able to buy the property from your mother on a Lease Option" that you make the payments and maintain the house with the option expiring on her passing date, converting back to her estate which you and any other heirs will inherit".

Like what @Adam Widder said check with your rep and see if there are other pricing options.

You can try to attend virtual events, many real estate meetups and events offer virtual options.