In my state, all of the contracts are available on the DORA website for free to the public, and you can go to a title company with a mutually executed contract and they will handle most of the mechanics of the transaction. Not sure about other states: I know some require attorney review at closing, or may not have all the contracts available online for free, etc. but it's probably not that complicated in most states. You'll have to learn the contracts, laws, and sales process for each state you want to work in. You can also hire a transaction coordinator to help for a few hundred dollars.
However, as an unrepresented buyer you'll probably screw something major up and leave more money on the table than you would using a GOOD (operative word here) agent to represent you. You probably won't believe me or want to hear this advice, but I see this ALL THE TIME. Some hotshot investor-type (often a Dr., lawyer, nouveau riche tech professional, retired athlete etc., usually highly successful in their own lane, intelligent and competitive with an ego to match) thinks they're too smart to need an agent and ends up worse off than if they had a GOOD agent. Many times they don't even realize it.
Forgive the tough love coming your way, but the fact that you held your license previously and are still asking this question tells me you'd benefit from representation. Sorry if that's not what you want to hear, but it's a public forum after all. Again, you can just get the necessary contracts, find a good title company, hire a transaction coordinator and go for it. But the chances of not messing something important up are low. The process for converting lead into gold using a particle accelerator is also pretty straight-forward. But it's not cost-effective. It costs more than just buying the gold which is of course also a lot easier.
Similarly, I get calls nearly every week from an unrepresented buyer wondering if they should sue the seller for failure to disclose (good luck, it's caveat emptor here and your chance to discover issues was during due diligence), or asking how to solve their problem with the property that they overlooked, or what to do now that they're under contract and realize the zestimate they used to make their offer was off by six figures and they are over-paying by a lot and don't have the contingencies to get out that they should, etc. and when I look into these transactions, it's clear they messed everything up. When an unrepresented buyer offers on one of my listings, I know 12 different ways to out-negotiate them and make them pay more at closing, without them ever even knowing it. Even a mediocre agent is usually better than no agent, but a GOOD agent will earn their commission and then some. I have several examples from last year when buyers (all highly intelligent, successful people), decided not to use an agent and literally left $400k on the table due to their ignorance.
@V.G Jason regarding the disparity in what agents bring to the table... I suspect this is mostly price-point related. I work in an expensive market where I live and in less expensive markets nearby where I and my clients mostly invest, and the difference in professionalism between agents in those two markets is glaringly conspicuous. Obviously the higher-end markets where the top agents are all multi-millionaires themselves and aren't automatically willing to say anything to get paid at closing are going to be different than markets where agents are barely scraping by.
@V.G Jason