You can take an online accounting and finance course which can provide you with the skills and knowledge to manage your business finances going forward. There are a number of resources available but some of the best online accounting & finance courses are:
AAT Business Finance Basics
Accounting and Finance, University 1st and 2nd Year (Level 4 and 5), Online Business School
AAT Level 2 Foundation Certificate in Accounting, McArthur Online Training
CIMA Cert in Business Accounting (Cert BA), Open Study College.