Does anyone recommend knowledge sources on building a mobile home parks (websites, books, organizations, plans, etc..). 

Any recommendation for the first steps I should take if I want to purchase my first rental property using the BRRRR method (or flipping).

I recommend you include some of your key qualification criteria in the advertisement.

We estimate the project will take less than 3 months to complete.I’m exploring alternative short-term financing solutions and would appreciate any advice or recommendations on options that might work well for this type of project.Thank you in advance for your insights and assistance!

You have received some great recommendations and if you are yet to decide on an Investor friendly to work with, you can send me a DM and see if we are a good fit.I do provide free mentorship and a lot of free resources and connections to anyone I work with especially beginners like you. 

Quote from @Eyad Ahmed: Starting my Virual wholesaling plan from egypt is quite challenging but doable i'm targeting indiana market with an established LLC and the deal machine software and mojo dialer and a presence whether on social media, a website,etc  looking to connect with realtors as I'm looking to start novations as well alongside wholesaling any recommendations about my plan or tips and trick's on how to close my first deal, also if there is any buyers in, fort wayne, indiana polis,munchie drop your email to add you to our end-buyers list also any recommemdations of title company that deals with digital banking for example: mercury,wise,relay and is investor friendlyI am the owner of DealMachine and also have 19 properties in Indianapolis.

They usually sound good, but give very little practical advice and make it sound easier than it is.

Highly recommend @Lien Vuong she commented below and has helped a lot of our clients start of expand their investment property portfolio. 

Do you recommend it?

Recommend doing a search.