@Marlena Cooper
Set aside an hour or two and find a nice quiet place with a laptop, a piece of paper, and a pen.
Get on Bigger Pockets and start searching for how others put together their deals, what they say, and most important, what the steps are from beginning to end. Write these steps down on the piece of paper. Make notes of postings you may want to print out that have scripts others have used in certain situations.
Go to the Resources tab at the top of the site and look under Fileplace for the paperwork you need. (Be careful, you can only download so many each week because you are not a Pro member.) Go to the Analyze tab and use the great calculators there to make sure your numbers work.
I'm not sure where you saw a rule about 20 houses but I've never heard of it. Learn where to pull comps from. Check out Redfin.
When you meet with sellers dress conservative business casual. Preferably have a pen and portfolio in hand. Have in mind how you are going to approach the seller. Remember, they contacted you. Start out, "Nice to meet you. It was great talking on the phone. Can you tell me a bit about the property and show me around. What was the story again about why you are looking to sell? Do you still owe on the property or is it paid off?"
Already have in mind a dollar range of what you will offer them for the property. If you still aren't sure because of something that was brought up in the conversation or something you saw at the property, thank them for their time and tell them that you are going to run some numbers and will make an offer within a set amount of time.
So to recap:
Write down the step by step way you are going to wholesale any property from the research you have done on this website. It may look like this.
1. Market using direct mail.
2. Get leads.
3. Follow up with leads.
4. Set up appointment with lead.
5. Analyze property and pull comps.
6. Meet with lead.
7. Make offer on property based on previous analysis.
8. Fill out purchase contract and be sure to include 'and/or assigns'.
9. Open escrow with a title company or attorney.
10. Begin marketing property to buyers or post property on Bigger Pockets, Craigslist, etc.
11. Agree with buyer on sales price.
12. Go to closing.
For every step listed there is tons of information on Bigger Pockets. Just search the site.
Also, if a seller questions your ability to buy simply say that you do have the ability. If pressed further on what you do tell them that you partner with others to purchase properties. Be transparent and honest. Don't lie.
Most sellers could care less. Remember, back to what was said previously, that they called you. They want to sell. Hopefully, at Step #3 you weeded out the tire kickers from the truly motivated.
Sorry for being so long winded. Having a plan or a step by step is like having a map. It shows you how to get where you want to go.