0. Identify and name your target group, e.g. commercial real estate agents in CA.
1. Find these people on Linkedin using advanced search option and invite them to connect.
2. Once connected you have their e-mail address, so send them a short e-mail (better response rate than InMails) describing the business problem and your solution. Short means 3-5 sentences, no attachments, just try to attract their attention.
3. Don't forget about follow-ups.
4. They will reply if interested and bam, you have a lead! Now it's time to set up a call and go into details.
5. Rinse and repeat. Stay persistent, you should send at least 20+ every day. Track response rates and adjust, you should achieve at least 5-10% easily.