I would also recommend “The Book on Estimating Rehab Cost” - That can give you a good general idea.

Reading books is not enough to feel comfortable doing this type of deals and I strongly consider seller-financing to have my feet wet in this real case if it makes sense.

ok so i checked it out the page that you provided isnt their web site its a squeeze page which is geared towards getting you to sign up by offering to give you a free e book which in turn gives them your contact info which adds u to their buyers list or private money lending list and all that depends on the page it self you might want to look in to doing more research on them of course so always do your due diligence when ever you deal with any one 

I have not yet finished the  Bigger Pockets book on real estate investing, and am reading some other sources—- I’m just looking for some general conceptual pointers about how the book-keeping acutallly works.

Looking for a tax professional that specializes in Real Estate that can help guide us through the structuring process and beyond.

So far I have read through Brandon Turner's book, The Book on Rental Property Investing, and am beginning for my second read through.

(Ohio, not Spain :) Or any good books on the numbers of investing in property?

I would be more than willing to take them to coffee or send them some badass books on expanding their consciousness if they are willing to help.Best,Dave@Brandon Turner

Lots of RE reading n listening on BP here...pod cast, blog, books etc.

For example, high season is Costa Rica is great, but there are definitely a few slow months during the course of the year with less occupancy. 3 - competition can be fierce as some markets are saturated with rentals, and reviews are important to getting bookings and it takes time to build reviewsYou are definitely in the right place for learning more - good luck!