Alternatives for a CPA

I was just curious around any alternatives to the CFA to learn more about finance. For context I'm a CPA who spent 4 years in mid-tier audit and have moved to the transaction advisory team. While a lot of my audit experience does translate across some of the core finance concepts (e.g. valuations, multiples, DCF and WACC calculations) are harder to grasp. I was hoping to do a course between now and then end of the year just to refine my skills while doing practical work at the same time. I was curious whether anyone would have any insights into WSP or CFI as something I can use as a bridge before getting into the CFA program next year.