Too basic? It seems very obvious to hire someone qualified to represent you in what is probably the biggest purchase/sale of your life. But on the flip side, it's also common for people to hire their neighbors, friends or an out-of-town relative for the job. It's a large transaction, please make sure that you are looking out for your best interests and that requires that you put on your 'business hat'.
There are a lot of agents out there with wide ranging experience- unfortunately it's not hard to get your real estate license, but that makes vetting your agent extremely important. Also, getting an offer accepted is just the beginning and escrow is a process that needs to be navigated. One of the most expensive mistakes buyers make is hiring a green or unqualified agent. 95% of the escrows that I complete are difficult and something goes awry- and then what? Make sure you are working with someone that has good inspectors, knows when to dig deeper, knows what potential expenses you have coming down the line, knows the lending process and can negotiate on your behalf. There is a whole second negotiating component in escrow after you have completed thorough investigations- make sure you take advantage of the information that you have.
Interview your agent and understand what they are planning on doing for you. Are they just going to put your property online? Will they have open houses? A website? Professional photos or a professional brochure? Or will you end up with a brochure that looks like it's from the 90s? And how often will you be getting updates? These are all good things to find out before you list. Also, a large piece of hiring a professional is mitigating your liability. Make sure your agent talks with you about what needs to be disclosed and why.
It's a process (and can even be a fun one), but make sure you build your team.