Narrow down the type of SaaS app/industry targeted to 3 so you can focus. Then experiment until you find the best way to reach their potential users. When something works, duplicate it.

The biggest pain point for any startup, including SaaS, is "how do I get customers".

Use the Reddit search function

1) Have an idea for a product or service
2) Write a business plan
3) Validate your numbers
4) Raise funds
5) Start selling

First make sure the program's offering matches your content. Then read the fine print looking for: frequency of payments, amount per lead, currency of payout etc. Most important: check on their reputation!

The key components for joing an affiliate program are:
1) Reliability of the company running the program and the marketing support they provide (Reputation and Location)
2) The type of product or service they want the affiliate to advertise (i.e sub-prime loans, weight loss drugs vs branded products)
3) Transparency of their platform where you track your leads and payments
4) Charge backs and speed of payments
5) Any hidden fees

Example: https://www.udemy.com/course/leadsmarket-affiliate-certification-program/?srsltid=AfmBOorV8SZsOYkQsyAUTAo-u-zrcMXIBa6NOjw5udZm39DuKCEtbOco

A traffic source is any media (paid or unpaid) where you place content that results in people clicking on your ad.

You start with unpaid media (YouTube, Facebook, Instagram, etc) and once you get results move to add on paid media.

The key is the value of your content.

Direct selling either B2B or B2C has a very turbulent and volatile enironment for the forseeable future. If you manufacture your own product and can pass on cost increases then you are most likely ok, but your market will shrink as companies go out of business or as consumers are laid-off.

If you buy your product from a 3rd party the above complications rise exponentially.

If you provide a service, pricing and market shrinkage will be a problem.

In summary - unless you control your product, it's cost and your product is not price sensitive, you may want to proceed very carefully right now.

The answers will depend on what your qualifications are, not where you are located. If you have good Internet, there are many platforms that allow you to bid on jobs regardless of your location and they will pay youso that the money ends up in your account.

They first create a very defined customer avatar. Once that is in place they can:
1) Buy leads
2) Email marketing
3) SMS marketing
4) Paid ads

The customer avatar is the most important element, constantly review it by testing and improve on it as you (hopefully) create a database of actual customers.

That will be very difficult since with every introduction, the person making the introduction is putting their reputation on the line.

So you will have to build up credibility by doing the research and then cold calling the institutions. That will slowly build your network and then you may get reciprocity where people introduce you to their contacts.