I'll chime in here, and agree with Mike, good PMs are incredibly hard to find, however, I will say that you get what you pay for. 

There are some incredible resources on here.

This only applies to the District of Columbia.There is a sorta-kinda interesting comment discussion on a popular local blog called Prince of Petworth (PoP) regarding TOPA "From the Forum – Assigning TOPA Rights".

Since your question seems to be tailored to vacation rentals, I would look up what the most popular vacation destinations are and the demographics of who is most likely to rent a vacation home in that destination.    

Writing down your goal is important in achieving it and that's what you have done.Now, with that said since you are not familiar with the niches, I added three of the most popular ones for you to review and decide on one, focus on it like a laser and then expand your footprint to the others at a later time.Don't be afraid to revisit the forums to pose questions which you may/will have.https://www.biggerpockets.com/renewsblog/2015/01/31/ultimate-beginners-guide-real-estate-wholesaling-2/ (Ultimate beginners guide to wholesaling)http://www.biggerpockets.com/renewsblog/2014/01/07/flipping-houses/ (step by step guide to flips)http://www.biggerpockets.com/renewsblog/2013/02/22/buying-rental-property/ (how to buy a rental property)It doesn't matter if you are young or old, totally new or need to build upon your experience.Yes, you have just announced a commitment to the thousands in this community about your seriousness regarding REI and have taken this bold step to affirm it.Your time on this site with the BiggerPockets community will be well spent and can be financially rewarding if you so desire.Don't get overwhelmed by the massive amount of data archived on this site.Simply, bone up on the areas that you need to expand knowledge in such as, Forums, Marketplace, Learn, Network, Analyze and Resources.Feast on the Podcasts, #askbp Podcasts, blogs and webinars REI books suggested by BPershttps://www.biggerpockets.com/renewsblog/2015/11/13/7-real-estate-books-beginner-investors/ (7 absolute must read books for beginner REIs)http://www.biggerpockets.com/renewsblog/2013/04/14/best-real-estate-books/?

Ok, now that you have taken your initial step, below are some quick links to get engaged.Since no mention of a specific REI area of interest was stated, I added three links from the most popular niches for your review and selection of one or all.https://www.biggerpockets.com/renewsblog/2015/01/31/ultimate-beginners-guide-real-estate-wholesaling-2/ (Ultimate beginners guide to wholesaling)http://www.biggerpockets.com/renewsblog/2014/01/07/flipping-houses/ (step by step guide to flips)http://www.biggerpockets.com/renewsblog/2013/02/22/buying-rental-property/ (how to buy a rental property) http://www.biggerpockets.com/startherehttp://www.biggerpockets.com/meethttps://www.biggerpockets.com/alertsHow to Use @Mentions on BiggerPocketshttps://www.biggerpockets.com/ruleshttps://www.biggerpockets.com/termshttps://www.biggerpockets.com/inviteshttps://www.biggerpockets.com/perkshttps://www.biggerpockets.com/forums/categorieshttps://www.biggerpockets.com/courses/a-beginners-introduction-to-real-estate-investing (video courses)https://www.biggerpockets.com/real-estate-investing (Ultimate beginner's guide to REI)REI can be very daunting, but, before you go searching for that 1st buy, please take a few minutes to bone up on the tips in link below.https://www.biggerpockets.com/renewsblog/2014/12/19/real-estate-investing-success-smart-tips/REI books suggested by BPershttps://www.biggerpockets.com/renewsblog/2015/11/13/7-real-estate-books-beginner-investors/ (7 absolute must read books for beginner REI)http://www.biggerpockets.com/renewsblog/2013/04/14/best-real-estate-books/?

Some popular events are NoteExpo and PaperSource 3.

..Incredible.

Welcome to the vibrant BP community, where you will find like minded individuals committed to REI and also helping others succeed.Your time on this social media site will be well spent.You have taken the 1st step by announcing your readiness and commitment to embark on a REI career.Whether you pursue, wholesale, rehab & fIip or buy and hold it's up to you to decide.Since you didn't mention a specific are of interest I added the below links to introduce you to three of the most popular niches, from which you can select one  to focus your REI career on and then add others later if you wish.https://www.biggerpockets.com/renewsblog/2015/01/31/ultimate-beginners-guide-real-estate-wholesaling-2/ (Ultimate beginners guide to wholesaling)http://www.biggerpockets.com/renewsblog/2014/01/07/flipping-houses/ (step by step guide to flips)http://www.biggerpockets.com/renewsblog/2013/02/22/buying-rental-property/ (how to buy a rental property)The bottom line is that you must take action to start.

I am looking for 4 plexes which are incredibly difficult to find that work but you may want to look also.