BarCharts, I. (2012). Accounting equations & answers. Retrieved from https://ebookcentral.proquest.com
AccountingCoach.com is a site that has both free and pay-for resources on accounting. Below are some links to the free material that may be helpful to you.
There are many other resources from AccountingCoach.com. Be aware that each link will tell you whether the resources if free or not. See the graphic below: