Many tools now offer more than one service - you'll find that they each have their own USP but it'll get quite expensive if you have subscriptions to every tool available. We recommend having a good selection of free and premium tools to give you a full 360-degree insight into your target audiences search behaviour and making sure your site is fully search engine optimized.
Take up this globally recognized certification from Google – Google Adwords Fundamentals. Covered across 7 different modules, you need to clear the Adwords Fundamentals exam and one of other 6 (Search, Display, Video, Shopping and Mobile Advertising) to get certified. There are also separate exams and certifications for latter 6 in case you want to clear all. Unfortunately, unlike the Google Analytics course, this is not a video format based course and so it calls for a stronger will power to ensure completion! You may also be interested in checking out Best Google Adwords Courses.
When starting out, focus on being a generalist. You won’t know what you’re most interested in yet, so building up a general digital marketing skill set will help you hone in on the areas that excite you most. You’ll also be more hireable since a digital marketer who can wear a few different hats is much more useful than one who only knows how to do Instagram ads.