If you're looking to upload an image to a blog post, for example, examine the file for its file size first. If it's anywhere in megabyte (MB) territory, even just 1 MB, it's a good idea to use an image compression tool to reduce the file size before uploading it to your blog. Sites like TinyPNG make it easy to compress images in bulk, while Google's very own Squoosh has been known to shrink image file sizes to microscopic levels.
Meta tags. Meta tags still play a vital role in SEO. If you type any keyword into a search engine, you’ll see how that keyword is reflected in the title for that page. Google looks at your page title as a signal of relevance for that keyword. The same holds true for the description of that page. (Don't worry about the keyword title tag -- Google has publicly said that it doesn't pay attention to that tag, since it has been abused by webmasters and all those trying to rank for certain keywords.)
A quick search for “SEO ranking factors” will give you all of these answers and myriad others. There is a lot of information out there. And the reality is, while there are likely hundreds of variables working together to determine final placement, much of what is suggested is guesswork. And certainly, not all ranking factors are relevant to every business.
Black hat SEO attempts to improve rankings in ways that are disapproved of by the search engines, or involve deception. One black hat technique uses hidden text, either as text colored similar to the background, in an invisible div, or positioned off screen. Another method gives a different page depending on whether the page is being requested by a human visitor or a search engine, a technique known as cloaking. Another category sometimes used is grey hat SEO. This is in between black hat and white hat approaches, where the methods employed avoid the site being penalized but do not act in producing the best content for users. Grey hat SEO is entirely focused on improving search engine rankings.
Although this is a step-by-step series, everyone's methods will (and should) vary, so it really depends on how much time you think it will take (if you're billing hourly). What tools do you have at your disposal vs. how much researching for information will you have to do on your own? Will you have to pay for research reports or companies? Do you pay a monthly service for data or research?
So many great tips! There are a couple of things I’ve implemented recently to try and boost traffic. One is to make a pdf version of my post that people can download. It’s a great way to build a list:) Another way is to make a podcast out of my post. I can then take a snippet of it and place it on my Facebook page as well as syndicate it. As far as video I’ve started to create a video with just a few key points from the post. The suggestion about going back to past articles is a tip I am definitely going to use especially since long-form content is so important. Thanks!