If you’re running an accounting business, at this stage your customers would be evaluating different potential service providers. They might need resources like pricing guides (so they know what ballpark rates are), how to evaluate the landscape of accounting services (i.e. whether to hire a solo accountant, an agency, etc.), or how to choose an accountant.
If you're wondering what a sales funnel is, simply imagine a real-world funnel. At the top of that funnel, some substance is poured in, which filters down towards one finite destination. In sales, something similar occurs. At the top, lots of visitors arrive who may enter your funnel. However, unlike the real-world funnel, not all who enter the sales funnel will reemerge out from the other end.