This question has at least 2 major facets:   1) you personally own the property (or maybe through an LLC)  and 2)  Your 401k owns the property being rented.   

I think the privacy is high on my personal priority list as well, as i may have been going overboard by researching soundproofing solutions between walls and am actually in the process of adding another layer of drywall.

What site or course do you recommend to start the Maryland Real estate sales person journey?

I’ve heard of folks borrowing from their personal network for a down payment, but is this actually used in practice?

This really depends on your market, personal finances, and risk tolerance.

Since you are just graduating college you may already realize that it's not what you know, but who you know (as a personal note, I had college friends that were barely passing their classes however they ended up with really good paying jobs due to "who they knew").

That’s a personal question, but time is money!

Each person can provide their own definition of freedom.

I also have a 12-door rental portfolio in Detroit.I personally would NOT sell your primary.

Technological advancements are reshaping the real estate industry for investors in various ways:Data Analytics: Advanced tools offer insights into market trends and investment opportunities, aiding informed decision-making and risk assessment.Virtual Reality (VR) and Augmented Reality (AR): Remote property exploration with virtual tours saves time and resources, attracting potential buyers or tenants and expediting transactions.Blockchain: Secure transactions via smart contracts reduce intermediaries, costs, and fraud risks in property dealings.Online Platforms and Marketplaces: Digital platforms broaden access to properties, investment options, and real-time market data, enhancing efficiency and transparency.Artificial Intelligence (AI): AI algorithms predict market trends, identify investment opportunities, and personalize recommendations based on investor preferences.Internet of Things (IoT): IoT devices provide real-time data on property performance, enabling cost reduction, efficiency improvements, and better tenant satisfaction.Crowdfunding Platforms: Real estate crowdfunding democratizes investment access, allowing smaller investors to participate in projects previously out of reach.In summary, embracing these innovations enhances efficiency, transparency, and accessibility in real estate investment, enabling investors to capitalize on emerging opportunities and stay competitive in the market.Thanks!