Hello Everyone,  I am looking to start a rental portfolio and need some advice on where to begin.

To me, that looks like a post to get business, but since you are new, I assume you don't really know the restrictions.To be successful on BP as an agent and advisor, you can't sell yourself and you have to have the background to help investors.

What kind of options are available that I could use to entice the seller to accept a 5-10% or smaller downpayment on a seller finance deal?

Something to the effect that they will look at pics and video of the space and give you ideas on how to make the space unique with good style to help your place stand apart from the competition and you can purchase the material from the company as well (think wall accents, cabinetry, etc)I think the pod dropped in the last couple weeks.

Go to online events for these areas.

You can use their 7 day free trial and just build up your list, and after your 7 days is done, use TruePeopleSearch.com to find phone numbers of the people you identified on Propstream. 

Congrats on graduating and starting your job!

I currently own a few single-family rental properties that have yielded excellent returns based on my projections.

At least within this question let's exclude the US market, taxes and laws since I am far from investing on that market.

Any advice on how best to accomplish this task?