Your banker can be a good friend, business associate, and advisor on finance. The recommendations are usually free. Ask him or her to look at your financial statements and forecasts. He sees many such items from other companies, both good and bad, and will be quick to spot a potential problem before it gets serious. Such an ally is also likely to help you with a loan or other financial help, if needed.
Suppliers can offer a wealth of information.
They sell to many other customers and they know what the smart operators do. Perhaps those managers have long ago solved a problem that you may be facing right now. Suppliers are usually glad to share this information with you, at no cost, so you don't have to reinvent the wheel. Business friends can be another source of good advice. You'll be getting counsel from successful people that you trust, and advice that is likely to be pretty good and free.