Forget whether or not to put your keyword in it, make it relevant to a searcher and write it for humans, not search engines. If you want to have this 20-word meta description which accurately describes the page you have optimised (for one or two keyword phrases) when people use Google to search, make sure the keyword is in there. There is more likelihood it will be used by Google as your snippet description in SERPs.
However, before learning any of that, it's important that you get a lay of the land, so to speak. If you truly want to understand the field of internet marketing, Sharpe has some very good points. In essence there are four overall steps to really understanding internet marketing and leveraging the industry to make money online. Depending on where you are with your education, you'll be somewhere along the lines of these four steps.
Website-specific crawlers, or software that crawls one particular website at a time, are great for analyzing your own website's SEO strengths and weaknesses; they're arguably even more useful for scoping out the competition's. Website crawlers analyze a website's URL, link structure, images, CSS scripting, associated apps, and third-party services to evaluate SEO. Not unlike how a website monitoring tool scans for a webpage's overall "health," website crawlers can identify factors such as broken links and errors, website lag, and content or metadata with low keyword density and SEO value, while mapping a website's architecture. Website crawlers can help your business improve website user experience (UX) while identifying key areas of improvement to help pages rank better. DeepCrawl is, by far, the most granular and detailed website crawler in this roundup, although Ahrefs and Majestic also provide comprehensive domain crawling and website optimization recommendations. Another major crawler we didn't test is Screaming Frog, which we'll soon discuss in the section called "The Enterprise Tier."
Luckily, there are plenty of DIY tools to help you boost and maintain your site’s search engine ranking. Some are free, while others come in a variety of paid versions to accommodate businesses of all sizes. All offer different tool sets to help you achieve various goals. The roundup below shows the key features and pricing info for 30 top Mac SEO tools so you can quickly and easily decide which one works best for you.