I typically spend up to 20% of my commissions on lead generation online and off.

Show separately for 2017 and the 3 preceding years: gross sales, cost of goods sold, gross profit, percentage of gross profit to gross sales, amounts collected, and gross profit on amounts collected.It seems, after reading this, that your solution would be the correct one - enter the gross profit for each year on Line 1 of Schedule C with a separate statement attached to the return describing the installment sale and how you arrived at the gross profit. 

I recently discovered the concept of AirBnB, and think it may be a good way to earn some rental income with my primary residence.

I head about them online, however their terms & condition paper work does not look very common and has multiple confusing clauses.Just want to know if anyone knows about them or their service?

I  go to these things to gain a little bit of information if any, but I see no reason to go to the paid ones since I can get the information I need via online like Bigger Pockets. 

Note: a Mortgage Credit Report will pick up dirt that those worthless "Online" consumer fico score reports won't show.Depending on how much of a Credit Criminal you have on your hands, in addition to a substantial "refundable deposit ask for 1st month's and last 2 month's rent up front (note: need to open an escrow account to deposit the rent payments and deposit collected)Write lease with an "EPD"  (Early Payment Discount), meaning if they ensure that you receive the monthly payment BEFORE the 1st day of the month, the rent is discounted $50, $100, $300 or whatever, depending on if you are leasing out a $50k home or a $3,000,000 home.And the very first time the rent is 5 days late, hire an evection company to go post an eviction notice to start the process and/or show them you are not playing and they will likely ensure you receive the rest of the rents on time after thatAnd I could go on and on listing things to do, but these are a few good ones  

I would suggest looking at some rental listings in greenville online. 

If you don't hear anything, then contact the daughter online.

So you have to weigh that.You paid your uncle 10k, which allowed you to to earn 21k.So, depending on your deal, even 15% on 75k may be acceptable to you based on the circumstances.

With my new HELOC, I am not sure if there are other options I can do to earn a higher gross yield, say 8% or above on  the purchase price.