Can you give advice on how to "log and track everything?" I was thinking just separate banking accounts and keep all expense receipts. Is that enough? Also, ho

Can you give advice on how to "log and track everything?" I was thinking just separate banking accounts and keep all expense receipts. Is that enough? Also, how much do I have to separate things like e-mail and server-usage? Do I need to pay for a separate server for my personal homepage and my company's page? Does your Delaware recommendation include LLC's? I was under the presumption it was mostly advantageous for C-Corps. Thanks!