It doesn't matter your age or experience: taking full advantage of the stock market and investing with confidence are common goals for all investors. Luckily, Zacks Premium offers several different ways to do both.The popular research service can help you become a smarter, more self-assured investor, giving you access to daily updates of the Zacks Rank and Zacks Industry Rank, the Zacks #1 Rank List, Equity Research reports, and Premium stock screens.Zacks Premium also includes the Zacks Style Scores.What are the Zacks Style Scores?The Zacks Style Scores is a unique set of guidelines that rates stocks based on three popular investing types, and were developed as complementary indicators for the Zacks Rank. This combination helps investors choose securities with the highest chances of beating the market over the next 30 days.Each stock is assigned a rating of A, B, C, D, or F based on their value, growth, and momentum characteristics. Just like in school, an A is better than a B, a B is better than a C, and so on -- that means the better the score, the better chance the stock will outperform.The Style Scores are broken down into four categories:Value ScoreValue investors love finding good stocks at good prices, especially before the broader market catches on to a stock's true value. Utilizing ratios like P/E, PEG, Price/Sales, Price/Cash Flow, and many other multiples, the Value Style Score identifies the most attractive and most discounted stocks.Growth ScoreWhile good value is important, growth investors are more focused on a company's financial strength and health, and its future outlook. The Growth Style Score takes projected and historic earnings, sales, and cash flow into account to uncover stocks that will see long-term, sustainable growth.Momentum ScoreMomentum traders and investors live by the saying "the trend is your friend." This investing style is all about taking advantage of upward or downward trends in a stock's price or earnings outlook. Employing factors like one-week price change and the monthly percentage change in earnings estimates, the Momentum Style Score can indicate favorable times to build a position in high-momentum stocks.VGM ScoreIf you want a combination of all three Style Scores, then the VGM Score will be your friend. It rates each stock on their combined weighted styles, helping you find the companies with the most attractive value, best growth forecast, and most promising momentum. It's also one of the best indicators to use with the Zacks Rank.How Style Scores Work with the Zacks RankThe Zacks Rank is a proprietary stock-rating model that harnesses the power of earnings estimate revisions, or changes to a company's earnings expectations, to help investors build a successful portfolio.It's highly successful, with #1 (Strong Buy) stocks producing an unmatched +25.41% average annual return since 1988. That's more than double the S&P 500. But because of the large number of stocks we rate, there are over 200 companies with a Strong Buy rank, plus another 600 with a #2 (Buy) rank, on any given day.But it can feel overwhelming to pick the right stocks for you and your investing goals with over 800 top-rated stocks to choose from.That's where the Style Scores come in.You want to make sure you're buying stocks with the highest likelihood of success, and to do that, you'll need to pick stocks with a Zacks Rank #1 or #2 that also have Style Scores of A or B. If you like a stock that only as a #3 (Hold) rank, it should also have Scores of A or B to guarantee as much upside potential as possible.The direction of a stock's earnings estimate revisions should always be a key factor when choosing which stocks to buy, since the Scores were created to work together with the Zacks Rank.A stock with a #4 (Sell) or #5 (Strong Sell) rating, for instance, even one with Scores of A and B, will still have a declining earnings forecast, and a greater chance its share price will fall too.Thus, the more stocks you own with a #1 or #2 Rank and Scores of A or B, the better.Stock to Watch: Liberty Oilfield Services (LBRT)Liberty Energy (previously Liberty Oilfield Services) is a premier provider of hydraulic fracturing and other auxiliary services to onshore exploration and production (E&P) companies in North America. Hydraulic fracturing is a method used to extract oil and natural gas by blasting underground rock formations with a mixture of water, sand and chemicals.LBRT is a #2 (Buy) on the Zacks Rank, with a VGM Score of A.Additionally, the company could be a top pick for growth investors. LBRT has a Growth Style Score of A, forecasting year-over-year earnings growth of 298% for the current fiscal year.Five analysts revised their earnings estimate upwards in the last 60 days for fiscal 2022. The Zacks Consensus Estimate has increased $0.32 to $2.02 per share. LBRT boasts an average earnings surprise of 58.5%.With a solid Zacks Rank and top-tier Growth and VGM Style Scores, LBRT should be on investors' short list. Free Report Reveals How You Could Profit from the Growing Electric Vehicle Industry Globally, electric car sales continue their remarkable growth even after breaking records in 2021. High gas prices have fueled his demand, but so has evolving EV comfort, features and technology. So, the fervor for EVs will be around long after gas prices normalize. Not only are manufacturers seeing record-high profits, but producers of EV-related technology are raking in the dough as well. Do you know how to cash in? If not, we have the perfect report for you – and it’s FREE! Today, don't miss your chance to download Zacks' top 5 stocks for the electric vehicle revolution at no cost and with no obligation.>>Send me my free report on the top 5 EV stocksWant the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report Liberty Energy Inc. (LBRT): Free Stock Analysis ReportTo read this article on Zacks.com click here.Zacks Investment Research