Can you give me the basic understanding of SEO for business with simple guide for beginners?

From the viewpoint of small commercial websites, the right form of the Search Engine Optimization doesn’t necessarily need to be too complicated. It means that you will have to concentrate on just four primary areas of organic search optimization, which are covered in this short SEO business guide. So, below I’m going to start with getting the right Keyword Selection, setting up a High-Quality Content, to end up with getting everything in place regarding the very Basics of On-Page SEO. All that being said, let’s quickly run through these four foundational areas of SEO that should be completed first and foremost.

Introduction to SEO in Business: Guide for Small Website Owners

Keyword Research

Creating a set of the main target Keywords – is the starting point of the very concept of Search Engine Optimization, disregarding the website topic, size, or the element of commerciality.That’s why our introduction to SEO in business with this guide starts namely with keywords. And the thing is that you should pick the best-fitting search terms, which are directly relevant to the sphere of industry you’re involved, or a given product/service you’re serving. And arguably the most challenging thing over there is to identify the right keywords with the highest search volume (i.e., frequently used by potential clients/buyers you’re targeting with your content), in line with not too high keyword competition (i.e., easy to rank for). I personally believe that limiting yourself to something around 5-7 core keywords to start with – would be a well-formed decision to set good results on a reasonable budget and time/effort spending. I recommend getting down to the basic keyword research using Google’s Keyword Planner tool, to keep moving with a bit more advanced online analytical platform like Moz’s Open Site Explorer, Semalt Analyzer (besides, it’s my fave one), or Screaming Frog SEO Spider. All these keyword toolkits gave got a use-proven performance, so it's only up to you to decide which one to pick.

High-Quality Content

Once you’ve got the main set of core target keywords to start with, it’s time to create a single page for each separate search term you’re going to optimize for. Remember, the content you’re creating must meet the user intent beyond the search, I mean that your web copy, as well as related articles/posts, should make good sense for the reader, first and foremost. So, let’s face it – writing on-page content for the sake of SEO solely doesn't work anymore. And simply getting your web pages “stuffed” with as many keywords as possible will never bring you anywhere, besides it can even hurt your ranking potential and drop your website to the bottom of Google’s SERPs. With that in mind, keep creating new content, in line with paying attention to the following on-page elements and their content optimization.

Basics of On-Page SEO

• Title Tags – given that these on-page elements appear in Google’s search results as a clickable link, you should make them all unique, embedded with relevant keywords (which are specific to their related web page), occasionally put your brand name and follow consistent approach to keep each Title Tag within a 55-character limit.

• Headings (H1/H6) – are the headlines and subheads of your web pages, which should split your plain-text writings into a clean & clear structure that would be easy to scan and digest. Note, however, that you can have only single H1 header per each web page, of course, unless you want to quickly earn yourself Google’s over-optimization ranking penalty. 
• URLs – these elements can give you another good opportunity to additionally utilize your main target keywords. Much like with Title Tags, you should create customized URLs for each corresponding web page and make them provide a concise summary of the page’s body content.When optimizing them, I recommend using all lowercases/hyphens to split separate words so that each URL makes sense for all – both the live users, and Google’s search crawling bots.
• Image ALT Tags – are needed to help the search engines “read” and “understand” your on-page content images. Otherwise, they will be simply left without indexing. To get well-optimized images, you should write the right shred of text for each ALT Tag, making it short & concise, as well as sufficiently descriptive and appealing to the general visual look of each corresponding image. Doing so, you will not only help the search engines with complete and correct indexing, but also make things easier for visually impaired people using screen reader for browsing. And don’t forget to take a moment to get image filenames optimized for search too. All you need is to apply a keyword-based name upon saving each image, in line with using only lowercase text and putting hyphens to separate words over there. That’s it.

• Meta Descriptions – of course, the last on-page area of SEO of this business guide may seem to be a bit daunting task when you actually get down to it. But you must still provide only fully optimized Meta Descriptions, because Google needs them to be displayed in the SERPs – right below the clickable link and URL to your website. Otherwise, the search engine would simply take a random piece of text that will hardly make sense for the user. While there is no direct impact on your organic rankings, writing correct Meta Descriptions can help you encourage more users to click to you and visit your web pages – simply by providing a compelling and fine-looking preview that show what exactly they will get over there. I recommend keeping each copy within about 150-155 average character length, in line with trying to drop a visually appealing call-to-action (i.e., link, banner, or clickable button) to give a measurable spur to better user interaction, therefore providing a higher Click-Through rate, and ultimately – improved Conversion-generating potential, which actually makes the profits of your small business. That’s it.