Might seem a bit difficult to make a place in the market of competitors but webmarketingcompanion.com companies can do this job for you. The main factor that these companies work on is the keyword optimization. Content is the king and keywords are the throne. The first step to search engine marketing is the selection of the appropriate keyword for making it search engine friendly. These are words that are used by the users in the search enrich engine. The most effective keywords have the following qualities:
1. They clearly define the purpose of the content.
2. They define the purpose of the website.
3. That allows your site to show up on the first page of search engine.
4. These are the most popular searches made by the user.

If i say about keyword research tools, i think semrush is one of the best ones - i use it for a long time and glad with the results. Have you ever tried it? Maybe your opinion will be different, it will be nice to know it.

Hi
Right Keywords can give you relevant traffic and relevant traffic can gives you more conversion so for choosing right keyword use google adwords keywords tool which shows relevant keywords.

Hi,
One of the biggest mistakes I see start-ups (or, for that matter, even larger companies) make is in the keyword selection process. They use the Google Keyword Research Tool. But the mistake they make is to “select” a Broad Match and not an “exact” match. For all SEO purposes, you need to consider only the “Exact” match numbers. I would advise going one step further and running a small “Adwords” campaign for your website. That will give you the most accurate data as to which keywords get you leads or sales. Once you have this data, you can start using it for SEO.